DANE: do not check dns_again_means_nonexist for TLSA results of TRY_AGAIN

[exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 1b3c2b45405d8e326e608b93b2d7cfbd12c65b8c..9243bd3f9babfbbd37bb8e6805f584d491bdb16d 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -7803,7 +7803,8 @@ connection timeout (the system timeout is used), no user or password, no limit
 on the number of entries returned, and no time limit on queries.
 
 When a DN is quoted in the USER= setting for LDAP authentication, Exim
-removes any URL quoting that it may contain before passing it LDAP. Apparently
+removes any URL quoting that it may contain before passing it to the LDAP library.
+Apparently
 some libraries do this for themselves, but some do not. Removing the URL
 quoting has two advantages:
 
@@ -9652,7 +9653,10 @@ Example use (as an ACL modifier):
 .code
       add_header = :at_start:${authresults {$primary_hostname}}
 .endd
-This is safe even if no authentication results are available.
+This is safe even if no authentication results are available
+.new
+and would generally be placed in the DATA ACL.
+.wen
 
 
 .vitem "&*${certextract{*&<&'field'&>&*}{*&<&'certificate'&>&*}&&&
@@ -11763,8 +11767,8 @@ Case and collation order are defined per the system C locale.
 SRS decode.  See SECT &<<SECTSRS>>& for details.
 
 
-.vitem &*inlist&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*& &&&
-       &*inlisti&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*&
+.vitem &*inlist&~{*&<&'subject'&>&*}{*&<&'list'&>&*}*& &&&
+       &*inlisti&~{*&<&'subject'&>&*}{*&<&'list'&>&*}*&
 .cindex "string" "comparison"
 .cindex "list" "iterative conditions"
 Both strings are expanded; the second string is treated as a list of simple
@@ -15617,7 +15621,12 @@ by a setting such as this:
 .code
 dns_again_means_nonexist = *.in-addr.arpa
 .endd
-This option applies to all DNS lookups that Exim does. It also applies when the
+This option applies to all DNS lookups that Exim does,
+.new
+except for TLSA lookups (where knowing about such failures
+is security-relevant).
+.wen
+It also applies when the
 &[gethostbyname()]& or &[getipnodebyname()]& functions give temporary errors,
 since these are most likely to be caused by DNS lookup problems. The
 &(dnslookup)& router has some options of its own for controlling what happens
@@ -17692,13 +17701,18 @@ This facility is only available on Linux.
 .cindex "banner for SMTP"
 .cindex "welcome banner for SMTP"
 .cindex "customizing" "SMTP banner"
-This string, which is expanded every time it is used, is output as the initial
+If a connect ACL does not supply a message,
+this string (which is expanded every time it is used) is output as the initial
 positive response to an SMTP connection. The default setting is:
 .code
 smtp_banner = $smtp_active_hostname ESMTP Exim \
   $version_number $tod_full
 .endd
-Failure to expand the string causes a panic error. If you want to create a
+.new
+Failure to expand the string causes a panic error;
+a forced fail just closes the connection.
+.wen
+If you want to create a
 multiline response to the initial SMTP connection, use &"\n"& in the string at
 appropriate points, but not at the end. Note that the 220 code is not included
 in this string. Exim adds it automatically (several times in the case of a
@@ -22388,7 +22402,7 @@ its removal from incoming messages, so that delivered messages can safely be
 resent to other recipients.
 
 &*Note:*& If used on a transport handling multiple recipients
-(the smtp transport unless &%rcpt_max%& is 1, the appendfile, pipe or lmtp
+(the smtp transport unless &%max_rcpt%& is 1, the appendfile, pipe or lmtp
 transport if &%batch_max%& is greater than 1)
 then information about Bcc recipients will be leaked.
 Doing so is generally not advised.
@@ -25769,12 +25783,22 @@ If this option is set true when the &%protocol%& option is set to &"lmtp"&, the
 string &`IGNOREQUOTA`& is added to RCPT commands, provided that the LMTP server
 has advertised support for IGNOREQUOTA in its response to the LHLO command.
 
-.option max_rcpt smtp integer 100
+.option max_rcpt smtp integer&!! 100
 .cindex "RCPT" "maximum number of outgoing"
-This option limits the number of RCPT commands that are sent in a single
-SMTP message transaction. Each set of addresses is treated independently, and
+This option,
+.new
+after expansion,
+.wen
+limits the number of RCPT commands that are sent in a single
+SMTP message transaction.
+A value setting of zero disables the limit.
+
+.new
+If a constant is given,
+.wen
+each set of addresses is treated independently, and
 so can cause parallel connections to the same host if &%remote_max_parallel%&
-permits this. A value setting of zero disables the limit.
+permits this.
 
 
 .option message_linelength_limit smtp integer 998
@@ -38898,7 +38922,7 @@ selection marked by asterisks:
 .irow &`etrn`&                         *       "ETRN commands"
 .irow &`host_lookup_failed`&           *       "as it says"
 .irow &`ident_timeout`&                        &nbsp; "timeout for ident connection"
-.irow &`incoming_interface`&           &nbsp; "local interface on <= and => lines"
+.irow &`incoming_interface`&           &nbsp; "local interface &amp; port on <= and => lines"
 .irow &`incoming_port`&                        &nbsp; "remote port on <= lines"
 .irow &`lost_incoming_connection`&     *       "as it says (includes timeouts)"
 .irow &`millisec`&                     &nbsp; "millisecond timestamps and RT,QT,DT,D times"