################################################## # The Exim mail transport agent # ################################################## # Copyright (c) The Exim Maintainers 2022 - 2024 # SPDX-License-Identifier: GPL-2.0-or-later # This is the template for Exim's main build-time configuration file. It # contains settings that are independent of any operating system. These are # things that are mostly sysadmin choices. The items below are divided into # those you must specify, those you probably want to specify, those you might # often want to specify, and those that you almost never need to mention. # Edit this file and save the result to a file called Local/Makefile within the # Exim distribution directory before running the "make" command. # Things that depend on the operating system have default settings in # OS/Makefile-Default, but these are overridden for some OS by files # called OS/Makefile-. You can further override these settings by # creating files Local/Makefile-, and Local/Makefile-. # The suffix "" stands for the name of your operating system - look # at the names in the OS directory to see which names are recognized, # and "" is the content of the environment variable "build". # However, if you are building Exim for a single OS only, you don't need to # worry about setting up Local/Makefile-. Any build-time configuration # settings you require can in fact be placed in the one file called # Local/Makefile. It is only if you are building for several OS from the same # source files that you need to worry about splitting off your own OS-dependent # settings into separate files. (There's more explanation about how this all # works in the toplevel README file, under "Modifying the building process", as # well as in the Exim specification.) # One OS-specific thing that may need to be changed is the command for running # the C compiler; the overall default is gcc, but some OS Makefiles specify cc. # You can override anything that is set by putting CC=whatever in your # Local/Makefile. # NOTE: You should never need to edit any of the distributed Makefiles; all # overriding can be done in your Local/Makefile(s). This will make it easier # for you when the next release comes along. # The location of the X11 libraries is something else that is quite variable # even between different versions of the same operating system (and indeed # there are different versions of X11 as well, of course). The four settings # concerned here are X11, XINCLUDE, XLFLAGS (linking flags) and X11_LD_LIB # (dynamic run-time library). You need not worry about X11 unless you want to # compile the Exim monitor utility. Exim itself does not use X11. # Another area of variability between systems is the type and location of the # DBM library package. Exim has support for ndbm, gdbm, tdb, Berkeley DB and # sqlite3. # By default the code assumes ndbm; this often works with gdbm or DB, provided # they are correctly installed, via their compatibility interfaces. However, # Exim can also be configured to use the native calls for Berkeley DB (obsolete # versions 1.85, 2.x, 3.x, or the current 4.x version) and also for gdbm. # See definitions for DBMLIB below. # For some operating systems, a default DBM library (other than ndbm) is # selected by a setting in the OS-specific Makefile. Most modern OS now have # a DBM library installed as standard, and in many cases this will be selected # for you by the OS-specific configuration. If Exim compiles without any # problems, you probably do not have to worry about the DBM library. If you # do want or need to change it, you should first read the discussion in the # file doc/doc-txt/dbm.discuss.txt, which also contains instructions for testing # Exim's interface to the DBM library. # In Local/Makefiles blank lines and lines starting with # are ignored. It is # also permitted to use the # character to add a comment to a setting, for # example # # EXIM_GID=42 # the "mail" group # # However, with some versions of "make" this works only if there is no white # space between the end of the setting and the #, so perhaps it is best # avoided. A consequence of this facility is that it is not possible to have # the # character present in any setting, but I can't think of any cases where # this would be wanted. ############################################################################### ############################################################################### # THESE ARE THINGS YOU MUST SPECIFY # ############################################################################### # Exim will not build unless you specify BIN_DIRECTORY, CONFIGURE_FILE, and # EXIM_USER. You also need EXIM_GROUP if EXIM_USER specifies a uid by number. # If you don't specify SPOOL_DIRECTORY, Exim won't fail to build. However, it # really is a very good idea to specify it here rather than at run time. This # is particularly true if you let the logs go to their default location in the # spool directory, because it means that the location of the logs is known # before Exim has read the run time configuration file. #------------------------------------------------------------------------------ # BIN_DIRECTORY defines where the exim binary will be installed by "make # install". The path is also used internally by Exim when it needs to re-invoke # itself, either to send an error message, or to recover root privilege. Exim's # utility binaries and scripts are also installed in this directory. There is # no "standard" place for the binary directory. Some people like to keep all # the Exim files under one directory such as /usr/exim; others just let the # Exim binaries go into an existing directory such as /usr/sbin or # /usr/local/sbin. The installation script will try to create this directory, # and any superior directories, if they do not exist. BIN_DIRECTORY=/usr/exim/bin #------------------------------------------------------------------------------ # CONFIGURE_FILE defines where Exim's run time configuration file is to be # found. It is the complete pathname for the file, not just a directory. The # location of all other run time files and directories can be changed in the # run time configuration file. There is a lot of variety in the choice of # location in different OS, and in the preferences of different sysadmins. Some # common locations are in /etc or /etc/mail or /usr/local/etc or # /usr/local/etc/mail. Another possibility is to keep all the Exim files under # a single directory such as /usr/exim. Whatever you choose, the installation # script will try to make the directory and any superior directories if they # don't exist. It will also install a default runtime configuration if this # file does not exist. CONFIGURE_FILE=/usr/exim/configure # It is possible to specify a colon-separated list of files for CONFIGURE_FILE. # In this case, Exim will use the first of them that exists when it is run. # However, if a list is specified, the installation script no longer tries to # make superior directories or to install a default runtime configuration. #------------------------------------------------------------------------------ # The Exim binary must normally be setuid root, so that it starts executing as # root, but (depending on the options with which it is called) it does not # always need to retain the root privilege. These settings define the user and # group that is used for Exim processes when they no longer need to be root. In # particular, this applies when receiving messages and when doing remote # deliveries. (Local deliveries run as various non-root users, typically as the # owner of a local mailbox.) Specifying these values as root is not supported. EXIM_USER= # If you specify EXIM_USER as a name, this is looked up at build time, and the # uid number is built into the binary. However, you can specify that this # lookup is deferred until runtime. In this case, it is the name that is built # into the binary. You can do this by a setting of the form: # EXIM_USER=ref:exim # In other words, put "ref:" in front of the user name. If you set EXIM_USER # like this, any value specified for EXIM_GROUP is also passed "by reference". # Although this costs a bit of resource at runtime, it is convenient to use # this feature when building binaries that are to be run on multiple systems # where the name may refer to different uids. It also allows you to build Exim # on a system where there is no Exim user defined. # If the setting of EXIM_USER is numeric (e.g. EXIM_USER=42), there must # also be a setting of EXIM_GROUP. If, on the other hand, you use a name # for EXIM_USER (e.g. EXIM_USER=exim), you don't need to set EXIM_GROUP unless # you want to use a group other than the default group for the given user. # EXIM_GROUP= # Many sites define a user called "exim", with an appropriate default group, # and use # # EXIM_USER=exim # # while leaving EXIM_GROUP unspecified (commented out). #------------------------------------------------------------------------------ # SPOOL_DIRECTORY defines the directory where all the data for messages in # transit is kept. It is strongly recommended that you define it here, though # it is possible to leave this till the run time configuration. # Exim creates the spool directory if it does not exist. The owner and group # will be those defined by EXIM_USER and EXIM_GROUP, and this also applies to # all the files and directories that are created in the spool directory. # Almost all installations choose this: SPOOL_DIRECTORY=/var/spool/exim ############################################################################### # TLS # ############################################################################### # Exim is built by default to support the SMTP STARTTLS command, which implements # Transport Layer Security using SSL (Secure Sockets Layer). This requires you # must install the OpenSSL library package or the GnuTLS library. Exim contains # no cryptographic code of its own. # If you are running Exim as a (TLS) server, just building it with TLS support # is all you need to do, as tls_advertise_hosts is set to '*' by # default. But you are advised to create a suiteable certificate, and tell # Exim about it by means of the tls_certificate and tls_privatekey run # time options, otherwise Exim will create a self signed certificate on # the fly. If you are running Exim only as a (TLS) client, building it with # TLS support is all you need to do. # # If you are using pkg-config then you should not need to worry where # the libraries and headers are installed, as the pkg-config .pc # specification should include all -L/-I information necessary. # Enabling the USE_*_PC options should be sufficient. If not using # pkg-config, then you have to specify the libraries, and you might # need to specify the locations too. # Uncomment the following lines if you want # to build Exim without any TLS support (either OpenSSL or GnuTLS): # DISABLE_TLS=yes # Unless you do this, you must define one of USE_OPENSSL or USE_GNUTLS # below. # If you are building with TLS, the library configuration must be done: # Uncomment this if you are using OpenSSL # USE_OPENSSL=yes # Uncomment one of these settings if you are using OpenSSL; pkg-config vs not # and an optional location. # USE_OPENSSL_PC=openssl # TLS_LIBS=-lssl -lcrypto # TLS_LIBS=-L/usr/local/openssl/lib -lssl -lcrypto # Uncomment this if you are using GnuTLS # USE_GNUTLS=yes # Uncomment one of these settings if you are using GnuTLS; pkg-config vs not # and an optional location. If you disable SUPPORT_DANE below, you # can remove the gnutls-dane references here. Earlier versions of GnuTLS # required libtasn1 and libgrypt also; add if needed. # USE_GNUTLS_PC=gnutls gnutls-dane # TLS_LIBS=-lgnutls -lgnutls-dane # TLS_LIBS=-L/usr/local/gnu/lib -lgnutls -ltasn1 -lgcrypt -lgnutls-dane # If using GnuTLS older than 2.10 and using pkg-config then note that Exim's # build process will require libgcrypt-config to exist in your $PATH. A # version that old is likely to become unsupported by Exim in 2017. # The security fix we provide with the gnutls_allow_auto_pkcs11 option # (4.82 PP/09) introduces a compatibility regression. The symbol is # not available if GnuTLS is build without p11-kit (--without-p11-kit # configure option). In this case use AVOID_GNUTLS_PKCS11=yes when # building Exim. # AVOID_GNUTLS_PKCS11=yes # If you are running Exim as a server, note that just building it with TLS # support is not all you need to do. You also need to set up a suitable # certificate, and tell Exim about it by means of the tls_certificate # and tls_privatekey run time options. You also need to set tls_advertise_hosts # to specify the hosts to which Exim advertises TLS support. On the other hand, # if you are running Exim only as a client, building it with TLS support # is all you need to do. # If you are using pkg-config then you should not need to worry where the # libraries and headers are installed, as the pkg-config .pc specification # should include all -L/-I information necessary. If not using pkg-config # then you might need to specify the locations too. # Additional libraries and include files are required for both OpenSSL and # GnuTLS. The TLS_LIBS settings above assume that the libraries are installed # with all your other libraries. If they are in a special directory, you may # need something like # TLS_LIBS=-L/usr/local/openssl/lib -lssl -lcrypto # or # TLS_LIBS=-L/opt/gnu/lib -lgnutls -ltasn1 -lgcrypt -lgnutls-dane # If not using DANE under GnuTLS we can lose one library # TLS_LIBS=-L/opt/gnu/lib -lgnutls -ltasn1 -lgcrypt # TLS_LIBS is included only on the command for linking Exim itself, not on any # auxiliary programs. If the include files are not in a standard place, you can # set TLS_INCLUDE to specify where they are, for example: # TLS_INCLUDE=-I/usr/local/openssl/include/ # or # TLS_INCLUDE=-I/opt/gnu/include # You don't need to set TLS_INCLUDE if the relevant directories are already # specified in INCLUDE. # Uncomment the following line to remove support for TLS Resumption # DISABLE_TLS_RESUME=yes ############################################################################### # THESE ARE THINGS YOU PROBABLY WANT TO SPECIFY # ############################################################################### # If you need extra header file search paths on all compiles, put the -I # options in INCLUDE. If you want the extra searches only for certain # parts of the build, see more specific xxx_INCLUDE variables below. # INCLUDE=-I/example/include # You need to specify some routers and transports if you want the Exim that you # are building to be capable of delivering mail. You almost certainly need at # least one type of lookup. You should consider whether you want to build # the Exim monitor or not. # If you need to override how pkg-config finds configuration files for # installed software, then you can set that here; wildcards will be expanded. # PKG_CONFIG_PATH=/usr/local/opt/openssl/lib/pkgconfig : /opt/*/lib/pkgconfig #------------------------------------------------------------------------------ # These settings determine which individual router drivers are included in the # Exim binary. There are no defaults in the code; those routers that are wanted # must be defined here by setting the appropriate variables to the value "yes". # Including a router in the binary does not cause it to be used automatically. # It has also to be configured in the run time configuration file. By # commenting out those you know you don't want to use, you can make the binary # a bit smaller. If you are unsure, leave all of these included for now. # # If set to "2" instead of "yes" then the corresponding driver will be # built as a module and must be installed into LOOKUP_MODULE_DIR (the name # is historic). # You need to add -export-dynamic -rdynamic to EXTRALIBS. You may also need to # add -ldl to EXTRALIBS so that dlopen() is available to Exim. You need to # define CFLAGS_DYNAIC and LOOKUP_MODULE_DIR below so the builds are done right, # and so the exim binary actually loads dynamic lookup modules. ROUTER_ACCEPT=yes ROUTER_DNSLOOKUP=yes ROUTER_IPLITERAL=yes ROUTER_MANUALROUTE=yes ROUTER_QUERYPROGRAM=yes ROUTER_REDIRECT=yes # This one is very special-purpose, so is not included by default. # ROUTER_IPLOOKUP=yes #------------------------------------------------------------------------------ # These settings determine which individual transport drivers are included in # the Exim binary. There are no defaults; those transports that are wanted must # be defined here by setting the appropriate variables to the value "yes". # Including a transport in the binary does not cause it to be used # automatically. It has also to be configured in the run time configuration # file. By commenting out those you know you don't want to use, you can make # the binary a bit smaller. If you are unsure, leave all of these included for # now. # # If set to "2" instead of "yes" then the corresponding driver will be # built as a module and must be installed into LOOKUP_MODULE_DIR (the name # is historic). # You need to add -export-dynamic -rdynamic to EXTRALIBS. You may also need to # add -ldl to EXTRALIBS so that dlopen() is available to Exim. You need to # define CFLAGS_DYNAIC and LOOKUP_MODULE_DIR below so the builds are done right, # and so the exim binary actually loads dynamic lookup modules. # The smtp transport cannot be built as a module. TRANSPORT_APPENDFILE=yes TRANSPORT_AUTOREPLY=yes TRANSPORT_PIPE=yes TRANSPORT_SMTP=yes # This one is special-purpose, and commonly not required, so it is not # included by default. # TRANSPORT_LMTP=yes #------------------------------------------------------------------------------ # The appendfile transport can write messages to local mailboxes in a number # of formats. The code for three specialist formats, maildir, mailstore, and # MBX, is included only when requested. If you do not know what this is about, # leave these settings commented out. # SUPPORT_MAILDIR=yes # SUPPORT_MAILSTORE=yes # SUPPORT_MBX=yes #------------------------------------------------------------------------------ # See below for dynamic lookup modules. # # If not using package management but using this anyway, then think about how # you perform upgrades and revert them. You should consider the benefit of # embedding the Exim version number into LOOKUP_MODULE_DIR, so that you can # maintain two concurrent sets of modules. # # *BEWARE*: ability to modify the files in LOOKUP_MODULE_DIR is equivalent to # the ability to modify the Exim binary, which is often setuid root! The Exim # developers only intend this functionality be used by OS software packagers # and we suggest that such packagings' integrity checks should be paranoid # about the permissions of the directory and the files within. # LOOKUP_MODULE_DIR=/usr/lib/exim/lookups/ # To build a module dynamically, you'll need to define CFLAGS_DYNAMIC for # your platform. Eg: # CFLAGS_DYNAMIC=-shared -rdynamic # CFLAGS_DYNAMIC=-shared -rdynamic -fPIC #------------------------------------------------------------------------------ # These settings determine which file and database lookup methods are included # in the binary. See the manual chapter entitled "File and database lookups" # for discussion. DBM and lsearch (linear search) are included by default. If # you are unsure about the others, leave them commented out for now. # LOOKUP_DNSDB does *not* refer to general mail routing using the DNS. It is # for the specialist case of using the DNS as a general database facility (not # common). # If set to "2" instead of "yes" then the corresponding lookup will be # built as a module and must be installed into LOOKUP_MODULE_DIR. You need to # add -export-dynamic -rdynamic to EXTRALIBS. You may also need to add -ldl to # EXTRALIBS so that dlopen() is available to Exim. You need to define # LOOKUP_MODULE_DIR above so the exim binary actually loads dynamic lookup # modules. # Also, instead of adding all the libraries/includes to LOOKUP_INCLUDE and # LOOKUP_LIBS, add them to the respective LOOKUP_*_INCLUDE and LOOKUP_*_LIBS # (where * is the name as given here in this list). That ensures that only # the dynamic library and not the exim binary will be linked against the # library. # # PASSWD, DBM and DNSDB can be build as modules but there is little point since # the accesses are always needed by the Exim core. # # For Redis you need to have hiredis installed on your system # (https://github.com/redis/hiredis). # Depending on where it is installed you may have to edit the CFLAGS # (often += -I/usr/local/include) and LOOKUP_LIBS (-lhiredis) lines. # If your system has pkg-config then the _INCLUDE/_LIBS setting can be # handled for you automatically by also defining the _PC variable to reference # the name of the pkg-config package, if such is available. This should not # be done for module builds. LOOKUP_DBM=yes LOOKUP_LSEARCH=yes LOOKUP_DNSDB=yes # LOOKUP_CDB=yes # LOOKUP_DSEARCH=yes # LOOKUP_IBASE=yes # LOOKUP_JSON=yes # LOOKUP_LDAP=yes # LOOKUP_LMDB=yes # LOOKUP_MYSQL=yes # LOOKUP_MYSQL_PC=mariadb # LOOKUP_NIS=yes # LOOKUP_NISPLUS=yes # LOOKUP_ORACLE=yes # LOOKUP_PASSWD=yes # LOOKUP_PGSQL=yes # LOOKUP_REDIS=yes # LOOKUP_SQLITE=yes # LOOKUP_SQLITE_PC=sqlite3 # LOOKUP_WHOSON=yes # These two settings are obsolete; all three lookups are compiled when # LOOKUP_LSEARCH is enabled. However, we retain these for backward # compatibility. Setting one forces LOOKUP_LSEARCH if it is not set. # LOOKUP_WILDLSEARCH=yes # LOOKUP_NWILDLSEARCH=yes #------------------------------------------------------------------------------ # If you have set LOOKUP_LDAP, you should set LDAP_LIB_TYPE to indicate # which LDAP library you have. Unfortunately, though most of their functions # are the same, there are minor differences. Currently Exim knows about four # LDAP libraries: the one from the University of Michigan (also known as # OpenLDAP 1), OpenLDAP 2, the Netscape SDK library, and the library that comes # with Solaris 7 onwards. Uncomment whichever of these you are using. # LDAP_LIB_TYPE=OPENLDAP1 # LDAP_LIB_TYPE=OPENLDAP2 # LDAP_LIB_TYPE=NETSCAPE # LDAP_LIB_TYPE=SOLARIS # If you don't set any of these, Exim assumes the original University of # Michigan (OpenLDAP 1) library. # For building as a modules, set LOOKUP_LDAP_INCLUDE and LOOKUP_LDAP_LIBS #------------------------------------------------------------------------------ # The PCRE2 library is required for Exim. There is no longer an embedded # version of the PCRE library included with the source code, instead you # must use a system library or build your own copy of PCRE2. # In either case you must specify the library link info here. If the # PCRE2 header files are not in the standard search path you must also # modify the INCLUDE path (above) # # Use PCRE_CONFIG to query the pcre-config command (first found in $PATH) # to find the include files and libraries, else use PCRE_LIBS and set INCLUDE # too if needed. PCRE2_CONFIG=yes # PCRE_LIBS=-lpcre2 #------------------------------------------------------------------------------ # Comment out the following line to remove DANE support. # Note: DANE support requires DNSSEC support (the default) and # SUPPORT_TLS (the default). For DANE under GnuTLS we need an additional # library. See TLS_LIBS or USE_GNUTLS_PC below. SUPPORT_DANE=yes #------------------------------------------------------------------------------ # Additional libraries and include directories may be required for some # lookup styles (e.g. LDAP, MYSQL or PGSQL). LOOKUP_LIBS is included only on # the command for linking Exim itself, not on any auxiliary programs. You # don't need to set LOOKUP_INCLUDE if the relevant directories are already # specified in INCLUDE. The settings below are just examples; -lpq is for # PostgreSQL, -lgds is for Interbase, -lsqlite3 is for SQLite, -lhiredis # is for Redis, -ljansson for JSON. # # You do not need to use this for any lookup information added via pkg-config. # # Libraries being built as modules should be added to respective # LOOKUP_*_INCLUDE and LOOKUP_*_LIBS rather than the the ones for the # core exim build. This gets them linked with the module instead # # LSEARCH, DSEARCH & CDB have no external library needs. # DNSDB needs the resolver library which the core uses anyway. # LOOKUP_INCLUDE=-I /usr/local/ldap/include -I /usr/local/mysql/include -I /usr/local/pgsql/include # LOOKUP_INCLUDE +=-I /usr/local/include # LOOKUP_LIBS=-L/usr/local/lib -lldap -llber -lmysqlclient -lpq -lgds -lsqlite3 -llmdb # LOOKUP_LIBS=-L/usr/local/lib -lldap -llber # Some platforms may need this for LOOKUP_NIS: #LOOKUP_LIBS += -lnsl #LOOKUP_LIBS += -ljansson #LOOKUP_LIBS += -lhiredis #------------------------------------------------------------------------------ # If you included LOOKUP_LMDB above you will need the library. Depending # on where installed you may also need an include directory # # LOOKUP_INCLUDE += -I/usr/local/include # LOOKUP_LIBS += -llmdb # For dynamic-modules builds, use instead LOOKUP_LMDB_INCLUDE & LOOKUP_LMDB_LIBS #------------------------------------------------------------------------------ # Compiling the Exim monitor: If you want to compile the Exim monitor, a # program that requires an X11 display, then EXIM_MONITOR should be set to the # value "eximon.bin". De-comment this setting to enable compilation of the # monitor. The locations of various X11 directories for libraries and include # files are defaulted in the OS/Makefile-Default file, but can be overridden in # local OS-specific make files. # EXIM_MONITOR=eximon.bin #------------------------------------------------------------------------------ # Compiling Exim with content scanning support: If you want to compile Exim # with support for message body content scanning, set WITH_CONTENT_SCAN to # the value "yes". This will give you malware and spam scanning in the DATA ACL, # and the MIME ACL. Please read the documentation to learn more about these # features. # WITH_CONTENT_SCAN=yes # If you have content scanning you may wish to only include some of the scanner # interfaces. Uncomment any of these lines to remove that code. # DISABLE_MAL_FFROTD=yes # DISABLE_MAL_FFROT6D=yes # DISABLE_MAL_DRWEB=yes # DISABLE_MAL_FSECURE=yes # DISABLE_MAL_SOPHIE=yes # DISABLE_MAL_CLAM=yes # DISABLE_MAL_AVAST=yes # DISABLE_MAL_SOCK=yes # DISABLE_MAL_CMDLINE=yes # These scanners are claimed to be no longer existent. DISABLE_MAL_AVE=yes DISABLE_MAL_KAV=yes DISABLE_MAL_MKS=yes #------------------------------------------------------------------------------ # If built with TLS, Exim includes code to support DKIM (DomainKeys Identified # Mail, RFC4871) signing and verification. Verification of signatures is # turned on by default. See the spec for information on conditionally # disabling it. To disable the inclusion of the entire feature, set # DISABLE_DKIM to "yes" # DISABLE_DKIM=yes #------------------------------------------------------------------------------ # Uncomment the following line to remove Per-Recipient-Data-Response support. # DISABLE_PRDR=yes #------------------------------------------------------------------------------ # Uncomment the following line to remove OCSP stapling support in TLS, # from Exim. Note it can only be supported when built with # GnuTLS 3.1.3 or later, or OpenSSL # DISABLE_OCSP=yes #------------------------------------------------------------------------------ # By default, Exim has support for checking the AD bit in a DNS response, to # determine if DNSSEC validation was successful. If your system libraries # do not support that bit, then set DISABLE_DNSSEC to "yes" # Note: DNSSEC is required for DANE support. # DISABLE_DNSSEC=yes # To disable support for Events set DISABLE_EVENT to "yes" # DISABLE_EVENT=yes # Uncomment this line to remove support for early pipelining, per # https://datatracker.ietf.org/doc/draft-harris-early-pipe/ # DISABLE_PIPE_CONNECT=yes # Uncomment the following to remove the fast-ramp two-phase-queue-run support # DISABLE_QUEUE_RAMP=yes # Uncomment the following lines to add SRS (Sender Rewriting Scheme) support # using only native facilities. # SUPPORT_SRS=yes # Uncomment the following to remove support for the ESMTP extension "WELLKNOWN" # DISABLE_WELLKNOWN=yes #------------------------------------------------------------------------------ # Compiling Exim with experimental features. These are documented in # experimental-spec.txt. "Experimental" means that the way these features are # implemented may still change. Backward compatibility is not guaranteed. # Uncomment the following line to add support for talking to dccifd. This # defaults the socket path to /usr/local/dcc/var/dccifd. # This support also requires WITH_CONTENT_SCAN enabled. # EXPERIMENTAL_DCC=yes # Uncomment the following line to add DMARC checking capability, implemented # using libopendmarc libraries. You must have SPF and DKIM support enabled also. # SUPPORT_DMARC=yes # CFLAGS += -I/usr/local/include # LDFLAGS += -lopendmarc # Uncomment the following if you need to change the default. You can # override it at runtime (main config option dmarc_tld_file) # DMARC_TLD_FILE=/etc/exim/opendmarc.tlds # # Library version libopendmarc-1.4.1-1.fc33.x86_64 (on Fedora 33) is known broken; # 1.3.2-3 works. It seems that the OpenDMARC project broke their API. # Use this option if you need to build with an old library (1.3.x) # DMARC_API=100300 # Uncomment the following line to add ARC (Authenticated Received Chain) # support. You must have SPF and DKIM support enabled also. # EXPERIMENTAL_ARC=yes # Uncomment the following lines to add Brightmail AntiSpam support. You need # to have the Brightmail client SDK installed. Please check the experimental # documentation for implementation details. You need to edit the CFLAGS and # LDFLAGS lines. # EXPERIMENTAL_BRIGHTMAIL=yes # CFLAGS += -I/opt/brightmail/bsdk-6.0/include # LDFLAGS += -lxml2_single -lbmiclient_single -L/opt/brightmail/bsdk-6.0/lib # Uncomment the following to include extra information in fail DSN message (bounces) # EXPERIMENTAL_DSN_INFO=yes # Uncomment the following line to add queuefile transport support # EXPERIMENTAL_QUEUEFILE=yes # # Uncomment the following line to add XCLIENT support # EXPERIMENTAL_XCLIENT=yes ############################################################################### # THESE ARE THINGS YOU MIGHT WANT TO SPECIFY # ############################################################################### # The items in this section are those that are commonly changed according to # the sysadmin's preferences, but whose defaults are often acceptable. The # first five are concerned with security issues, where differing levels of # paranoia are appropriate in different environments. Sysadmins also vary in # their views on appropriate levels of defence in these areas. If you do not # understand these issues, go with the defaults, which are used by many sites. #------------------------------------------------------------------------------ # Which DBM library to use. If you do not specify a specific here, you get # the platform default. Uncomment the pair of lines as preferred. # Note: when changing an installation from one DB type to another all the # hints-DB files, in spool/db, should be removed. # gdbm in native mode # USE_GDBM = yes # DBMLIB = -lgdbm # gdbm in Berkeley-DB compatibility mode # USE_NDBM = yes # DBMLIB = -lgdbm -lgdbm_compat # tdb # USE_TDB = yes # DBMLIB = -ltdb # Berkeley DB # USE_DB = yes # DBMLIB = -ldb # sqlite # USE_SQLITE = yes # DBMLIB = -lsqlite3 #------------------------------------------------------------------------------ # Although Exim is normally a setuid program, owned by root, it refuses to run # local deliveries as root by default. There is a runtime option called # "never_users" which lists the users that must never be used for local # deliveries. There is also the setting below, which provides a list that # cannot be overridden at runtime. This guards against problems caused by # unauthorized changes to the runtime configuration. You are advised not to # remove "root" from this option, but you can add other users if you want. The # list is colon-separated. It must NOT contain any spaces. # FIXED_NEVER_USERS=root:bin:daemon FIXED_NEVER_USERS=root #------------------------------------------------------------------------------ # By default, Exim insists that its configuration file be owned by root. You # can specify one additional permitted owner here. # CONFIGURE_OWNER= # If the configuration file is group-writeable, Exim insists by default that it # is owned by root. You can specify one additional permitted group owner here. # CONFIGURE_GROUP= # If you specify CONFIGURE_OWNER or CONFIGURE_GROUP as a name, this is looked # up at build time, and the uid or gid number is built into the binary. # However, you can specify that the lookup is deferred until runtime. In this # case, it is the name that is built into the binary. You can do this by a # setting of the form: # CONFIGURE_OWNER=ref:mail # CONFIGURE_GROUP=ref:sysadmin # In other words, put "ref:" in front of the user or group name. Although this # costs a bit of resource at runtime, it is convenient to use this feature when # building binaries that are to be run on multiple systems where the names may # refer to different uids or gids. It also allows you to build Exim on a system # where the relevant user or group is not defined. #------------------------------------------------------------------------------ # The -C option allows Exim to be run with an alternate runtime configuration # file. When this is used by root, root privilege is retained by the binary # (for any other caller including the Exim user, it is dropped). You can # restrict the location of alternate configurations by defining a prefix below. # Any file used with -C must then start with this prefix (except that /dev/null # is also permitted if the caller is root, because that is used in the install # script). If the prefix specifies a directory that is owned by root, a # compromise of the Exim account does not permit arbitrary alternate # configurations to be used. The prefix can be more restrictive than just a # directory (the second example). # ALT_CONFIG_PREFIX=/some/directory/ # ALT_CONFIG_PREFIX=/some/directory/exim.conf- #------------------------------------------------------------------------------ # When a user other than root uses the -C option to override the configuration # file (including the Exim user when re-executing Exim to regain root # privileges for local message delivery), this will normally cause Exim to # drop root privileges. The TRUSTED_CONFIG_LIST option, specifies a file which # contains a list of trusted configuration filenames, one per line. If the -C # option is used by the Exim user or by the user specified in the # CONFIGURE_OWNER setting, to specify a configuration file which is listed in # the TRUSTED_CONFIG_LIST file, then root privileges are not dropped by Exim. # TRUSTED_CONFIG_LIST=/usr/exim/trusted_configs #------------------------------------------------------------------------------ # Uncommenting this option disables the use of the -D command line option, # which changes the values of macros in the runtime configuration file. # This is another protection against somebody breaking into the Exim account. # DISABLE_D_OPTION=yes #------------------------------------------------------------------------------ # By contrast, you might be maintaining a system which relies upon the ability # to override values with -D and assumes that these will be passed through to # the delivery processes. As of Exim 4.73, this is no longer the case by # default. Going forward, we strongly recommend that you use a shim Exim # configuration file owned by root stored under TRUSTED_CONFIG_LIST. # That shim can set macros before .include'ing your main configuration file. # # As a strictly transient measure to ease migration to 4.73, the # WHITELIST_D_MACROS value defines a colon-separated list of macro-names # which are permitted to be overridden from the command-line which will be # honoured by the Exim user. So these are macros that can persist to delivery # time. # Examples might be -DTLS or -DSPOOL=/some/dir. The values on the # command-line are filtered to only permit: [A-Za-z0-9_/.-]* # # This option is highly likely to be removed in a future release. It exists # only to make 4.73 as easy as possible to migrate to. If you use it, we # encourage you to schedule time to rework your configuration to not depend # upon it. Most people should not need to use this. # # By default, no macros are whitelisted for -D usage. # WHITELIST_D_MACROS=TLS:SPOOL #------------------------------------------------------------------------------ # Exim has support for the AUTH (authentication) extension of the SMTP # protocol, as defined by RFC 2554. If you don't know what SMTP authentication # is, you probably won't want to include this code, so you should leave these # settings commented out. If you do want to make use of SMTP authentication, # you must uncomment at least one of the following, so that appropriate code is # included in the Exim binary. You will then need to set up the run time # configuration to make use of the mechanism(s) selected. # # If set to "2" instead of "yes" then the corresponding driver will be # built as a module and must be installed into LOOKUP_MODULE_DIR (the name # is historic). # You need to add -export-dynamic -rdynamic to EXTRALIBS. You may also need to # add -ldl to EXTRALIBS so that dlopen() is available to Exim. You need to # define CFLAGS_DYNAIC and LOOKUP_MODULE_DIR below so the builds are done right, # and so the exim binary actually loads dynamic lookup modules. # # Libraries being built as modules should be added to respective # LOOKUP_*_INCLUDE and LOOKUP_*_LIBS rather than the the ones for the # core exim build. This gets them linked with the module instead. # The heimdal does build but we have no test coverage so it is not know to work. # AUTH_CRAM_MD5=yes # AUTH_CYRUS_SASL=yes # AUTH_DOVECOT=yes # AUTH_EXTERNAL=yes # AUTH_GSASL=yes # AUTH_GSASL_PC=libgsasl # AUTH_HEIMDAL_GSSAPI=yes # AUTH_HEIMDAL_GSSAPI_PC=heimdal-gssapi # AUTH_HEIMDAL_GSSAPI_PC=heimdal-gssapi heimdal-krb5 # AUTH_PLAINTEXT=yes # AUTH_SPA=yes # AUTH_TLS=yes # Heimdal through 1.5 required pkg-config 'heimdal-gssapi'; Heimdal 7.1 # requires multiple pkg-config files to work with Exim, so the second example # above is needed. #------------------------------------------------------------------------------ # If you specified AUTH_CYRUS_SASL above, you should ensure that you have the # Cyrus SASL library installed before trying to build Exim, and you probably # want to uncomment the first line below. # Similarly for GNU SASL, unless pkg-config is used via AUTH_GSASL_PC. # Ditto for AUTH_HEIMDAL_GSSAPI(_PC). # AUTH_LIBS=-lsasl2 # AUTH_LIBS=-lgsasl # AUTH_LIBS=-lgssapi -lheimntlm -lkrb5 -lhx509 -lcom_err -lhcrypto -lasn1 -lwind -lroken -lcrypt # If using AUTH_GSASL with SCRAM methods, you should also be defining # SUPPORT_I18N to get standards-conformant support of utf8 normalization. #------------------------------------------------------------------------------ # When Exim is decoding MIME "words" in header lines, most commonly for use # in the $header_xxx expansion, it converts any foreign character sets to the # one that is set in the headers_charset option. The default setting is # defined by this setting: HEADERS_CHARSET="ISO-8859-1" # If you are going to make use of $header_xxx expansions in your configuration # file, or if your users are going to use them in filter files, and the normal # character set on your host is something other than ISO-8859-1, you might # like to specify a different default here. This value can be overridden in # the runtime configuration, and it can also be overridden in individual filter # files. # # IMPORTANT NOTE: The iconv() function is needed for character code # conversions. Please see the next item... #------------------------------------------------------------------------------ # Character code conversions are possible only if the iconv() function is # installed on your operating system. There are two places in Exim where this # is relevant: (a) The $header_xxx expansion (see the previous item), and (b) # the Sieve filter support. For those OS where iconv() is known to be installed # as standard, the file in OS/Makefile-xxxx contains # # HAVE_ICONV=yes # # If you are not using one of those systems, but have installed iconv(), you # need to uncomment that line above. In some cases, you may find that iconv() # and its header file are not in the default places. You might need to use # something like this: # # HAVE_ICONV=yes # CFLAGS=-O -I/usr/local/include # EXTRALIBS_EXIM=-L/usr/local/lib -liconv # # but of course there may need to be other things in CFLAGS and EXTRALIBS_EXIM # as well. # # nb: FreeBSD as of 4.89 defines LIBICONV_PLUG to pick up the system iconv # more reliably. If you explicitly want the libiconv Port then as well # as adding -liconv you'll want to unset LIBICONV_PLUG. If you actually need # this, let us know, but for now the Exim Maintainers are assuming that this # is uncommon and so you'll need to edit OS/os.h-FreeBSD yourself to remove # the define. #------------------------------------------------------------------------------ # The passwords for user accounts are normally encrypted with the crypt() # function. Comparisons with encrypted passwords can be done using Exim's # "crypteq" expansion operator. (This is commonly used as part of the # configuration of an authenticator for use with SMTP AUTH.) At least one # operating system has an extended function called crypt16(), which uses up to # 16 characters of a password (the normal crypt() uses only the first 8). Exim # supports the use of crypt16() as well as crypt() but note the warning below. # You can always indicate a crypt16-encrypted password by preceding it with # "{crypt16}". If you want the default handling (without any preceding # indicator) to use crypt16(), uncomment the following line: # DEFAULT_CRYPT=crypt16 # If you do that, you can still access the basic crypt() function by preceding # an encrypted password with "{crypt}". For more details, see the description # of the "crypteq" condition in the manual chapter on string expansions. # Some operating systems do not include a crypt16() function, so Exim has one # of its own, which it uses unless HAVE_CRYPT16 is defined. Normally, that will # be set in an OS-specific Makefile for the OS that have such a function, so # you should not need to bother with it. # *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** # It turns out that the above is not entirely accurate. As well as crypt16() # there is a function called bigcrypt() that some operating systems have. This # may or may not use the same algorithm, and both of them may be different to # Exim's built-in crypt16() that is used unless HAVE_CRYPT16 is defined. # # However, since there is now a move away from the traditional crypt() # functions towards using SHA1 and other algorithms, tidying up this area of # Exim is seen as very low priority. In practice, if you need to, you can # define DEFAULT_CRYPT to the name of any function that has the same interface # as the traditional crypt() function. # *** WARNING *** WARNING *** WARNING *** WARNING *** WARNING *** #------------------------------------------------------------------------------ # The default distribution of Exim contains only the plain text form of the # documentation. Other forms are available separately. If you want to install # the documentation in "info" format, first fetch the Texinfo documentation # sources from the ftp directory and unpack them, which should create files # with the extension "texinfo" in the doc directory. You may find that the # version number of the texinfo files is different to your Exim version number, # because the main documentation isn't updated as often as the code. For # example, if you have Exim version 4.43, the source tarball unpacks into a # directory called exim-4.43, but the texinfo tarball unpacks into exim-4.40. # In this case, move the contents of exim-4.40/doc into exim-4.43/doc after you # have unpacked them. Then set INFO_DIRECTORY to the location of your info # directory. This varies from system to system, but is often /usr/share/info. # Once you have done this, "make install" will build the info files and # install them in the directory you have defined. # INFO_DIRECTORY=/usr/share/info #------------------------------------------------------------------------------ # Exim log directory and files: Exim creates several log files inside a # single log directory. You can define the directory and the form of the # log file name here. If you do not set anything, Exim creates a directory # called "log" inside its spool directory (see SPOOL_DIRECTORY above) and uses # the filenames "mainlog", "paniclog", and "rejectlog". If you want to change # this, you can set LOG_FILE_PATH to a path name containing one occurrence of # %s. This will be replaced by one of the strings "main", "panic", or "reject" # to form the final file names. Some installations may want something like this: # LOG_FILE_PATH=/var/log/exim_%slog # which results in files with names /var/log/exim_mainlog, etc. The directory # in which the log files are placed must exist; Exim does not try to create # it for itself. It is also your responsibility to ensure that Exim is capable # of writing files using this path name. The Exim user (see EXIM_USER above) # must be able to create and update files in the directory you have specified. # You can also configure Exim to use syslog, instead of or as well as log # files, by settings such as these # LOG_FILE_PATH=syslog # LOG_FILE_PATH=syslog:/var/log/exim_%slog # The first of these uses only syslog; the second uses syslog and also writes # to log files. Do not include white space in such a setting as it messes up # the building process. #------------------------------------------------------------------------------ # When logging to syslog, the following option caters for syslog replacements # that are able to accept log entries longer than the 1024 characters allowed # by RFC 3164. It is up to you to make sure your syslog daemon can handle this. # Non-printable characters are usually unacceptable regardless, so log entries # are still split on newline characters. # SYSLOG_LONG_LINES=yes # If you are not interested in the process identifier (pid) of the Exim that is # making the call to syslog, then comment out the following line. SYSLOG_LOG_PID=yes #------------------------------------------------------------------------------ # Cycling log files: this variable specifies the maximum number of old # log files that are kept by the exicyclog log-cycling script. You don't have # to use exicyclog. If your operating system has other ways of cycling log # files, you can use them instead. The exicyclog script isn't run by default; # you have to set up a cron job for it if you want it. EXICYCLOG_MAX=10 #------------------------------------------------------------------------------ # The compress command is used by the exicyclog script to compress old log # files. Both the name of the command and the suffix that it adds to files # need to be defined here. See also the EXICYCLOG_MAX configuration. COMPRESS_COMMAND=/usr/bin/gzip COMPRESS_SUFFIX=gz #------------------------------------------------------------------------------ # If the exigrep utility is fed compressed log files, it tries to uncompress # them using this command. # Leave it empty to enforce autodetection at runtime: # ZCAT_COMMAND= # # Omit the path if you want to use your system's PATH: # ZCAT_COMMAND=zcat # # Or specify the full pathname: ZCAT_COMMAND=/usr/bin/zcat #------------------------------------------------------------------------------ # Compiling in support for embedded Perl: If you want to be able to # use Perl code in Exim's string manipulation language and you have Perl # (version 5.004 or later) installed, set EXIM_PERL to perl.o. Using embedded # Perl costs quite a lot of resources. Only do this if you really need it. # EXIM_PERL=perl.o #------------------------------------------------------------------------------ # Support for dynamically-loaded string expansion functions via ${dlfunc. If # you are using gcc the dynamically-loaded object must be compiled with the # -shared option, and you will need to add -export-dynamic to EXTRALIBS so # that the local_scan API is made available by the linker. You may also need # to add -ldl to EXTRALIBS so that dlopen() is available to Exim. # EXPAND_DLFUNC=yes #------------------------------------------------------------------------------ # Exim has support for PAM (Pluggable Authentication Modules), a facility # which is available in the latest releases of Solaris and in some GNU/Linux # distributions (see http://ftp.kernel.org/pub/linux/libs/pam/). The Exim # support, which is intended for use in conjunction with the SMTP AUTH # facilities, is included only when requested by the following setting: # SUPPORT_PAM=yes # You probably need to add -lpam to EXTRALIBS, and in some releases of # GNU/Linux -ldl is also needed. #------------------------------------------------------------------------------ # Proxying. # # If you may want to use outbound (client-side) proxying, using Socks5, # uncomment the line below. # SUPPORT_SOCKS=yes # If you may want to use inbound (server-side) proxying, using Proxy Protocol, # uncomment the line below. # SUPPORT_PROXY=yes #------------------------------------------------------------------------------ # Internationalisation. # # Uncomment the following to include Internationalisation features. This is the # SMTPUTF8 ESMTP extension, and associated facilities for handling UTF8 domain # and localparts, per RFC 3490 (IDNA2003). # You need to have the IDN library installed. # If you want IDNA2008 mappings per RFCs 5890, 6530 and 6533, you additionally # need libidn2 and SUPPORT_I18N_2008. # SUPPORT_I18N=yes # LDFLAGS += -lidn # SUPPORT_I18N_2008=yes # LDFLAGS += -lidn -lidn2 #------------------------------------------------------------------------------ # Uncomment the following lines to add SPF support. You need to have libspf2 # installed on your system (www.libspf2.org). Depending on where it is installed # you may have to edit the CFLAGS and LDFLAGS lines. # SUPPORT_SPF=yes # CFLAGS += -I/usr/local/include # LDFLAGS += -lspf2 #------------------------------------------------------------------------------ # Support for authentication via Radius is also available. The Exim support, # which is intended for use in conjunction with the SMTP AUTH facilities, # is included only when requested by setting the following parameter to the # location of your Radius configuration file: # RADIUS_CONFIG_FILE=/etc/radiusclient/radiusclient.conf # RADIUS_CONFIG_FILE=/etc/radius.conf # If you have set RADIUS_CONFIG_FILE, you should also set one of these to # indicate which RADIUS library is used: # RADIUS_LIB_TYPE=RADIUSCLIENT # RADIUS_LIB_TYPE=RADIUSCLIENTNEW # RADIUS_LIB_TYPE=RADLIB # RADIUSCLIENT is the radiusclient library; you probably need to add # -lradiusclient to EXTRALIBS. # # The API for the radiusclient library was changed at release 0.4.0. # Unfortunately, the header file does not define a version number that clients # can use to support both the old and new APIs. If you are using version 0.4.0 # or later of the radiusclient library, you should use RADIUSCLIENTNEW. # # RADLIB is the Radius library that comes with FreeBSD (the header file is # called radlib.h); you probably need to add -lradius to EXTRALIBS. # # If you do not set RADIUS_LIB_TYPE, Exim assumes the radiusclient library, # using the original API. #------------------------------------------------------------------------------ # Support for authentication via the Cyrus SASL pwcheck daemon is available. # Note, however, that pwcheck is now deprecated in favour of saslauthd (see # next item). The Exim support for pwcheck, which is intented for use in # conjunction with the SMTP AUTH facilities, is included only when requested by # setting the following parameter to the location of the pwcheck daemon's # socket. # # There is no need to install all of SASL on your system. You just need to run # ./configure --with-pwcheck, cd to the pwcheck directory within the sources, # make and make install. You must create the socket directory (default # /var/pwcheck) and chown it to Exim's user and group. Once you have installed # pwcheck, you should arrange for it to be started by root at boot time. # CYRUS_PWCHECK_SOCKET=/var/pwcheck/pwcheck #------------------------------------------------------------------------------ # Support for authentication via the Cyrus SASL saslauthd daemon is available. # The Exim support, which is intended for use in conjunction with the SMTP AUTH # facilities, is included only when requested by setting the following # parameter to the location of the saslauthd daemon's socket. # # There is no need to install all of SASL on your system. You just need to run # ./configure --with-saslauthd (and any other options you need, for example, to # select or deselect authentication mechanisms), cd to the saslauthd directory # within the sources, make and make install. You must create the socket # directory (default /var/state/saslauthd) and chown it to Exim's user and # group. Once you have installed saslauthd, you should arrange for it to be # started by root at boot time. # CYRUS_SASLAUTHD_SOCKET=/var/state/saslauthd/mux #------------------------------------------------------------------------------ # TCP wrappers: If you want to use tcpwrappers from within Exim, uncomment # this setting. See the manual section entitled "Use of tcpwrappers" in the # chapter on building and installing Exim. # # USE_TCP_WRAPPERS=yes # # You may well also have to specify a local "include" file and an additional # library for TCP wrappers, so you probably need something like this: # # USE_TCP_WRAPPERS=yes # CFLAGS=-O -I/usr/local/include # EXTRALIBS_EXIM=-L/usr/local/lib -lwrap # # but of course there may need to be other things in CFLAGS and EXTRALIBS_EXIM # as well. # # To use a name other than exim in the tcpwrappers config file, # e.g. if you're running multiple daemons with different access lists, # or multiple MTAs with the same access list, define # TCP_WRAPPERS_DAEMON_NAME accordingly # # TCP_WRAPPERS_DAEMON_NAME="exim" #------------------------------------------------------------------------------ # The default action of the exim_install script (which is run by "make # install") is to install the Exim binary with a unique name such as # exim-4.43-1, and then set up a symbolic link called "exim" to reference it, # moving the symbolic link from any previous version. If you define NO_SYMLINK # (the value doesn't matter), the symbolic link is not created or moved. You # will then have to "turn Exim on" by setting up the link manually. # NO_SYMLINK=yes #------------------------------------------------------------------------------ # Another default action of the install script is to install a default runtime # configuration file if one does not exist. This configuration has a router for # expanding system aliases. The default assumes that these aliases are kept # in the traditional file called /etc/aliases. If such a file does not exist, # the installation script creates one that contains just comments (no actual # aliases). The following setting can be changed to specify a different # location for the system alias file. SYSTEM_ALIASES_FILE=/etc/aliases #------------------------------------------------------------------------------ # There are some testing options (-be, -bt, -bv) that read data from the # standard input when no arguments are supplied. By default, the input lines # are read using the standard fgets() function. This does not support line # editing during interactive input (though the terminal's "erase" character # works as normal). If your operating system has the readline() function, and # in addition supports dynamic loading of library functions, you can cause # Exim to use readline() for the -be testing option (only) by uncommenting the # following setting. Dynamic loading is used so that the library is loaded only # when the -be testing option is given; by the time the loading occurs, # Exim has given up its root privilege and is running as the calling user. This # is the reason why readline() is NOT supported for -bt and -bv, because Exim # runs as root or as exim, respectively, for those options. When USE_READLINE # is "yes", as well as supporting line editing, a history of input lines in the # current run is maintained. # USE_READLINE=yes # You may need to add -ldl to EXTRALIBS when you set USE_READLINE=yes. # Note that this option adds to the size of the Exim binary, because the # dynamic loading library is not otherwise included. # If libreadline is not in the normal library paths, then because Exim is # setuid you'll need to ensure that the correct directory is stamped into # the binary so that dlopen will find it. # Eg, on macOS/Darwin with a third-party install of libreadline, perhaps: # EXTRALIBS_EXIM+=-Wl,-rpath,/usr/local/opt/readline/lib #------------------------------------------------------------------------------ # Uncomment this setting to include IPv6 support. # HAVE_IPV6=yes ############################################################################### # THINGS YOU ALMOST NEVER NEED TO MENTION # ############################################################################### # The settings in this section are available for use in special circumstances. # In the vast majority of installations you need not change anything below. #------------------------------------------------------------------------------ # The following commands live in different places in some OS. Either the # ultimate default settings, or the OS-specific files should already point to # the right place, but they can be overridden here if necessary. These settings # are used when building various scripts to ensure that the correct paths are # used when the scripts are run. They are not used in the Makefile itself. Perl # is not necessary for running Exim unless you set EXIM_PERL (see above) to get # it embedded, but there are some utilities that are Perl scripts. If you # haven't got Perl, Exim will still build and run; you just won't be able to # use those utilities. # CHOWN_COMMAND=/usr/bin/chown # CHGRP_COMMAND=/usr/bin/chgrp # CHMOD_COMMAND=/usr/bin/chmod # MV_COMMAND=/bin/mv # RM_COMMAND=/bin/rm # TOUCH_COMMAND=/usr/bin/touch # PERL_COMMAND=/usr/bin/perl #------------------------------------------------------------------------------ # The following macro can be used to change the command for building a library # of functions. By default the "ar" command is used, with options "cq". # Only in rare circumstances should you need to change this. # AR=ar cq #------------------------------------------------------------------------------ # In some operating systems, the value of the TMPDIR environment variable # controls where temporary files are created. Exim does not make use of # temporary files, except when delivering to MBX mailboxes. However, if Exim # calls any external libraries (e.g. DBM libraries), they may use temporary # files, and thus be influenced by the value of TMPDIR. For this reason, when # Exim starts, it checks the environment for TMPDIR, and if it finds it is set, # it replaces the value with what is defined here. Commenting this setting # suppresses the check altogether. Older installations call this macro # just TMPDIR, but this has side effects at build time. At runtime # TMPDIR is checked as before. EXIM_TMPDIR="/tmp" #------------------------------------------------------------------------------ # The following macros can be used to change the default modes that are used # by the appendfile transport. In most installations the defaults are just # fine, and in any case, you can change particular instances of the transport # at run time if you want. # APPENDFILE_MODE=0600 # APPENDFILE_DIRECTORY_MODE=0700 # APPENDFILE_LOCKFILE_MODE=0600 #------------------------------------------------------------------------------ # In some installations there may be multiple machines sharing file systems, # where a different configuration file is required for Exim on the different # machines. If CONFIGURE_FILE_USE_NODE is defined, then Exim will first look # for a configuration file whose name is that defined by CONFIGURE_FILE, # with the node name obtained by uname() tacked on the end, separated by a # period (for example, /usr/exim/configure.host.in.some.domain). If this file # does not exist, then the bare configuration file name is tried. # CONFIGURE_FILE_USE_NODE=yes #------------------------------------------------------------------------------ # In some esoteric configurations two different versions of Exim are run, # with different setuid values, and different configuration files are required # to handle the different cases. If CONFIGURE_FILE_USE_EUID is defined, then # Exim will first look for a configuration file whose name is that defined # by CONFIGURE_FILE, with the effective uid tacked on the end, separated by # a period (for example, /usr/exim/configure.0). If this file does not exist, # then the bare configuration file name is tried. In the case when both # CONFIGURE_FILE_USE_EUID and CONFIGURE_FILE_USE_NODE are set, four files # are tried: .., ., ., and . # CONFIGURE_FILE_USE_EUID=yes #------------------------------------------------------------------------------ # The size of the delivery buffers: These specify the sizes (in bytes) of # the buffers that are used when copying a message from the spool to a # destination. There is rarely any need to change these values. # DELIVER_IN_BUFFER_SIZE=8192 # DELIVER_OUT_BUFFER_SIZE=8192 #------------------------------------------------------------------------------ # The mode of the database directory: Exim creates a directory called "db" # in its spool directory, to hold its databases of hints. This variable # determines the mode of the created directory. The default value in the # source is 0750. # EXIMDB_DIRECTORY_MODE=0750 #------------------------------------------------------------------------------ # Database file mode: The mode of files created in the "db" directory defaults # to 0640 in the source, and can be changed here. # EXIMDB_MODE=0640 #------------------------------------------------------------------------------ # Database lock file mode: The mode of zero-length files created in the "db" # directory to use for locking purposes defaults to 0640 in the source, and # can be changed here. # EXIMDB_LOCKFILE_MODE=0640 #------------------------------------------------------------------------------ # This parameter sets the maximum length of the header portion of a message # that Exim is prepared to process. The default setting is one megabyte. The # limit exists in order to catch rogue mailers that might connect to your SMTP # port, start off a header line, and then just pump junk at it for ever. The # message_size_limit option would also catch this, but it may not be set. # The value set here is the default; it can be changed at runtime. # HEADER_MAXSIZE="(1024*1024)" #------------------------------------------------------------------------------ # The mode of the input directory: The input directory is where messages are # kept while awaiting delivery. Exim creates it if necessary, using a mode # which can be defined here (default 0750). # INPUT_DIRECTORY_MODE=0750 #------------------------------------------------------------------------------ # The mode of Exim's log directory, when it is created by Exim inside the spool # directory, defaults to 0750 but can be changed here. # LOG_DIRECTORY_MODE=0750 #------------------------------------------------------------------------------ # The log files themselves are created as required, with a mode that defaults # to 0640, but which can be changed here. # LOG_MODE=0640 #------------------------------------------------------------------------------ # The TESTDB lookup is for performing tests on the handling of lookup results, # and is not useful for general running. It should be included only when # debugging the code of Exim. # LOOKUP_TESTDB=yes #------------------------------------------------------------------------------ # /bin/sh is used by default as the shell in which to run commands that are # defined in the makefiles. This can be changed if necessary, by uncommenting # this line and specifying another shell, but note that a Bourne-compatible # shell is expected. # MAKE_SHELL=/bin/sh #------------------------------------------------------------------------------ # The maximum number of named lists of each type (address, domain, host, and # local part) can be increased by changing this value. It should be set to # a multiple of 16. # MAX_NAMED_LIST=16 #------------------------------------------------------------------------------ # Network interfaces: Unless you set the local_interfaces option in the runtime # configuration file to restrict Exim to certain interfaces only, it will run # code to find all the interfaces there are on your host. Unfortunately, # the call to the OS that does this requires a buffer large enough to hold # data for all the interfaces - it was designed in the days when a host rarely # had more than three or four interfaces. Nowadays hosts can have very many # virtual interfaces running on the same hardware. If you have more than 250 # virtual interfaces, you will need to uncomment this setting and increase the # value. # MAXINTERFACES=250 #------------------------------------------------------------------------------ # Per-message logs: While a message is in the process of being delivered, # comments on its progress are written to a message log, for the benefit of # human administrators. These logs are held in a directory called "msglog" # in the spool directory. Its mode defaults to 0750, but can be changed here. # The message log directory is also used for storing files that are used by # transports for returning data to a message's sender (see the "return_output" # option for transports). # MSGLOG_DIRECTORY_MODE=0750 #------------------------------------------------------------------------------ # There are three options which are used when compiling the Perl interface and # when linking with Perl. The default values for these are placed automatically # at the head of the Makefile by the script which builds it. However, if you # want to override them, you can do so here. # PERL_CC= # PERL_CCOPTS= # PERL_LIBS= #------------------------------------------------------------------------------ # If you wish to disable valgrind in the binary, define NVALGRIND=1. # This should not be needed. # NVALGRIND=1 #------------------------------------------------------------------------------ # Identifying the daemon: When an Exim daemon starts up, it writes its pid # (process id) to a file so that it can easily be identified. The path of the # file can be specified here. Some installations may want something like this: # PID_FILE_PATH=/var/lock/exim.pid # If PID_FILE_PATH is not defined, Exim writes a file in its spool directory # using the name "exim-daemon.pid". # If you start up a daemon without the -bd option (for example, with just # the -q15m option), a pid file is not written. Also, if you override the # configuration file with the -oX option, no pid file is written. In other # words, the pid file is written only for a "standard" daemon. #------------------------------------------------------------------------------ # If Exim creates the spool directory, it is given this mode, defaulting in the # source to 0750. # SPOOL_DIRECTORY_MODE=0750 #------------------------------------------------------------------------------ # The mode of files on the input spool which hold the contents of messages can # be changed here. The default is 0640 so that information from the spool is # available to anyone who is a member of the Exim group. # SPOOL_MODE=0640 #------------------------------------------------------------------------------ # Moving frozen messages: If the following is uncommented, Exim is compiled # with support for automatically moving frozen messages out of the main spool # directory, a facility that is found useful by some large installations. A # run time option is required to cause the moving actually to occur. Such # messages become "invisible" to the normal management tools. # SUPPORT_MOVE_FROZEN_MESSAGES=yes #------------------------------------------------------------------------------ # Expanding match_* second parameters: BE CAREFUL IF ENABLING THIS! # It has proven too easy in practice for administrators to configure security # problems into their Exim install, by treating match_domain{}{} and friends # as a form of string comparison, where the second string comes from untrusted # data. Because these options take lists, which can include lookup;LOOKUPDATA # style elements, a foe can then cause Exim to, eg, execute an arbitrary MySQL # query, dropping tables. # From Exim 4.77 onwards, the second parameter is not expanded; it can still # be a list literal, or a macro, or a named list reference. There is also # the new expansion condition "inlisti" which does expand the second parameter, # but treats it as a list of strings; also, there's "eqi" which is probably # what is normally wanted. # # If you really need to have the old behaviour, know what you are doing and # will not complain if your system is compromised as a result of doing so, then # uncomment this option to get the old behaviour back. # EXPAND_LISTMATCH_RHS=yes #------------------------------------------------------------------------------ # Disabling the use of fsync(): DO NOT UNCOMMENT THE FOLLOWING LINE unless you # really, really, really know what you are doing. And even then, think again. # You should never uncomment this when compiling a binary for distribution. # Use it only when compiling Exim for your own use. # # Uncommenting this line enables the use of a runtime option called # disable_fsync, which can be used to stop Exim using fsync() to ensure that # files are written to disc before proceeding. When this is disabled, crashes # and hardware problems such as power outages can cause data to be lost. This # feature should only be used in very exceptional circumstances. YOU HAVE BEEN # WARNED. # ENABLE_DISABLE_FSYNC=yes #------------------------------------------------------------------------------ # For development, add this to include code to time various stages and report. # CFLAGS += -DMEASURE_TIMING # For a very slightly smaller build, for constrained systems, uncomment this. # The feature involved is purely for debugging. # DISABLE_CLIENT_CMD_LOG=yes # End of EDITME for Exim.