Document behaviour of message_size_limit=0 (main config setting, not transport)

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 1092cab54d843f6f5ed3ad72e8291fe84f3dd825..1c3e43492b4be550c05f53953089ac1d3c5ae8ad 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -10610,6 +10610,15 @@ is empty and &$authentication_failed$& is set to &"1"&). Failure includes any
 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"
@@ -14160,6 +14169,10 @@ probably safest to just set it to a little larger than this value.  Eg, with a
 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"
@@ -19946,13 +19959,16 @@ This option applies only to deliveries in maildir format, and is described in
 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"
@@ -27333,7 +27349,7 @@ checks.
 
 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.
 
@@ -27387,7 +27403,7 @@ go over the limit is not added to the set, in the same way that the client's
 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