. /////////////////////////////////////////////////////////////////////////////
.set previousversion "4.75"
-.set version "4.76"
+.set version "4.77"
.set ACL "access control lists (ACLs)"
.set I " "
<author><firstname>Exim</firstname><surname>Maintainers</surname></author>
<authorinitials>EM</authorinitials>
<revhistory><revision>
- <revnumber>4.76</revnumber>
- <date>06 May 2011</date>
+ <revnumber>4.77</revnumber>
+ <date>10 Oct 2011</date>
<authorinitials>EM</authorinitials>
</revision></revhistory>
<copyright><year>2011</year><holder>University of Cambridge</holder></copyright>
The following Exim mailing lists exist:
.table2 140pt
+.row &'exim-announce@exim.org'& "Moderated, low volume announcements list"
.row &'exim-users@exim.org'& "General discussion list"
.row &'exim-dev@exim.org'& "Discussion of bugs, enhancements, etc."
-.row &'exim-announce@exim.org'& "Moderated, low volume announcements list"
-.row &'exim-future@exim.org'& "Discussion of long-term development"
+.row &'exim-cvs@exim.org'& "Automated commit messages from the VCS"
.endtable
You can subscribe to these lists, change your existing subscriptions, and view
chapter &<<CHAPfdlookup>>&. For example:
.code
hold_domains = mysql;select domain from holdlist \
- where domain = '$domain';
+ where domain = '${quote_mysql:$domain}';
.endd
In most cases, the data that is looked up is not used (so for an SQL query, for
example, it doesn't matter what field you select). Exim is interested only in
This condition turns a string holding a true or false representation into
a boolean state. It parses &"true"&, &"false"&, &"yes"& and &"no"&
(case-insensitively); also positive integer numbers map to true if non-zero,
-false if zero. Leading and trailing whitespace is ignored.
+false if zero.
+An empty string is treated as false.
+Leading and trailing whitespace is ignored;
+thus a string consisting only of whitespace is false.
All other string values will result in expansion failure.
When combined with ACL variables, this expansion condition will let you
includes the case of letters, whereas for &%gti%& the comparison is
case-independent.
+.new
+.vitem &*inlist&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*& &&&
+ &*inlisti&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*&
+.cindex "string" "comparison"
+.cindex "list" "iterative conditions"
+Both strings are expanded; the second string is treated as a list of simple
+strings; if the first string is a member of the second, then the condition
+is true.
+
+These are simpler to use versions of the more powerful &*forany*& condition.
+Examples, and the &*forany*& equivalents:
+.code
+${if inlist{needle}{foo:needle:bar}}
+ ${if forany{foo:needle:bar}{eq{$item}{needle}}}
+${if inlisti{Needle}{fOo:NeeDLE:bAr}}
+ ${if forany{fOo:NeeDLE:bAr}{eqi{$item}{Needle}}}
+.endd
+.wen
+
.vitem &*isip&~{*&<&'string'&>&*}*& &&&
&*isip4&~{*&<&'string'&>&*}*& &&&
&*isip6&~{*&<&'string'&>&*}*&
.vitem &*match_ip&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*&
.cindex "&%match_ip%& expansion condition"
+.new
This condition matches an IP address to a list of IP address patterns. It must
be followed by two argument strings. The first (after expansion) must be an IP
-address or an empty string. The second (after expansion) is a restricted host
+address or an empty string. The second (not expanded) is a restricted host
list that can match only an IP address, not a host name. For example:
+.wen
.code
${if match_ip{$sender_host_address}{1.2.3.4:5.6.7.8}{...}{...}}
.endd
.endd
.endlist ilist
+.new
+Note that <&'string2'&> is not itself subject to string expansion, unless
+Exim was built with the EXPAND_LISTMATCH_RHS option.
+.wen
+
Consult section &<<SECThoslispatip>>& for further details of these patterns.
.vitem &*match_local_part&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*&
have their local parts matched casefully. Domains are always matched
caselessly.
+.new
+Note that <&'string2'&> is not itself subject to string expansion, unless
+Exim was built with the EXPAND_LISTMATCH_RHS option.
+.wen
+
&*Note*&: Host lists are &'not'& supported in this way. This is because
hosts have two identities: a name and an IP address, and it is not clear
how to specify cleanly how such a test would work. However, IP addresses can be
negative response to an AUTH command, including (for example) an attempt to use
an undefined mechanism.
+.new
+.vitem &$av_failed$&
+.cindex "content scanning" "AV scanner failure"
+This variable is available when Exim is compiled with the content-scanning
+extension. It is set to &"0"& by default, but will be set to &"1"& if any
+problem occurs with the virus scanner (specified by &%av_scanner%&) during
+the ACL malware condition.
+.wen
+
.vitem &$body_linecount$&
.cindex "message body" "line count"
.cindex "body of message" "line count"
.cindex "binary zero" "in message body"
.vindex "&$body_zerocount$&"
When a message is being received or delivered, this variable contains the
-number of binary zero bytes in the message's body.
+number of binary zero bytes (ASCII NULs) in the message's body.
.vitem &$bounce_recipient$&
.vindex "&$bounce_recipient$&"
command, which can be found in the separate document entitled &'Exim's
interfaces to mail filtering'&.
+.new
+.vitem &$tls_bits$&
+.vindex "&$tls_bits$&"
+Contains an approximation of the TLS cipher's bit-strength; the meaning of
+this depends upon the TLS implementation used.
+If TLS has not been negotiated, the value will be 0.
+The value of this is automatically fed into the Cyrus SASL authenticator
+when acting as a server, to specify the "external SSF" (a SASL term).
+.wen
+
.vitem &$tls_certificate_verified$&
.vindex "&$tls_certificate_verified$&"
This variable is set to &"1"& if a TLS certificate was verified when the
This option defines the &"random"& local part that can be used as part of
callout verification. The default value is
.code
-$primary_host_name-$tod_epoch-testing
+$primary_hostname-$tod_epoch-testing
.endd
See section &<<CALLaddparcall>>& for details of how this value is used.
default Exim message size of 50M and a default ClamAV StreamMaxLength of 10M,
some problems may result.
+A value of 0 will disable size limit checking; Exim will still advertise the
+SIZE extension in an EHLO response, but without a limit, so as to permit
+SMTP clients to still indicate the message size along with the MAIL verb.
+
.option move_frozen_messages main boolean false
.cindex "frozen messages" "moving"
section &<<SECTmaildirdelivery>>& below.
-.option maildir_use_size_file appendfile boolean false
+.new
+.option maildir_use_size_file appendfile&!! boolean false
.cindex "maildir format" "&_maildirsize_& file"
-Setting this option true enables support for &_maildirsize_& files. Exim
+The result of string expansion for this option must be a valid boolean value.
+If it is true, it enables support for &_maildirsize_& files. Exim
creates a &_maildirsize_& file in a maildir if one does not exist, taking the
quota from the &%quota%& option of the transport. If &%quota%& is unset, the
value is zero. See &%maildir_quota_directory_regex%& above and section
&<<SECTmaildirdelivery>>& below for further details.
+.wen
.option maildirfolder_create_regex appendfile string unset
.cindex "maildir format" "&_maildirfolder_& file"
For &%gnutls_require_mac%&, the recognized names are SHA (synonym SHA1), and
MD5. The default list contains SHA, MD5.
-For &%gnutls_require_protocols%&, the recognized names are TLS1 and SSL3.
-The default list contains TLS1, SSL3.
+.new
+For &%gnutls_require_protocols%&, the recognized names are TLS1.2, TLS1.1,
+TLS1.0, (TLS1) and SSL3.
+The default list contains TLS1.2, TLS1.1, TLS1.0, SSL3.
+TLS1 is an alias for TLS1.0, for backwards compatibility.
+For sufficiently old versions of the GnuTLS library, TLS1.2 or TLS1.1 might
+not be supported and will not be recognised by Exim.
+.wen
In a server, the order of items in these lists is unimportant. The server
advertises the availability of all the relevant cipher suites. However, in a
The &%per_*%& options described above do not make sense in some ACLs. If you
use a &%per_*%& option in an ACL where it is not normally permitted then the
-update mode defaults to &%readonly%& and you cannot specify the &%strict&% or
+update mode defaults to &%readonly%& and you cannot specify the &%strict%& or
&%leaky%& modes. In other ACLs the default update mode is &%leaky%& (see the
next section) so you must specify the &%readonly%& option explicitly.
recorded rate is not updated in the same situation.
When you combine the &%unique=%& and &%readonly%& options, the specific
-%&unique=%& value is ignored, and Exim just retrieves the client's stored
+&%unique=%& value is ignored, and Exim just retrieves the client's stored
rate.
The &%unique=%& mechanism needs more space in the ratelimit database than the
really random &-- it is defined by the expansion of the option
&%callout_random_local_part%&, which defaults to
.code
-$primary_host_name-$tod_epoch-testing
+$primary_hostname-$tod_epoch-testing
.endd
The idea here is to try to determine whether the remote host accepts all local
parts without checking. If it does, there is no point in doing callouts for
A colon-separated list of names of headers included in the signature.
.vitem &%$dkim_key_testing%&
"1" if the key record has the "testing" flag set, "0" if not.
-.vitem &%$dkim_key_nosubdomaining%&
+.vitem &%$nosubdomains%&
"1" if the key record forbids subdomaining, "0" otherwise.
.vitem &%$dkim_key_srvtype%&
Service type (tag s=) from the key record. Defaults to "*" if not specified
git://git.exim.org / exim.git / blobdiff