Logging-only patch for 8BITMIME; bug 817.

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index d35c305c8ad1898c2243049a3301f3d010960cf3..2555139217a12f99f53ff3982b9aad9538be6aef 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -11063,6 +11063,12 @@ inserting the message header line with the given name. Note that the name must
 be terminated by colon or white space, because it may contain a wide variety of
 characters. Note also that braces must &'not'& be used.
 
+.vitem &$headers_added$&
+.vindex "&$headers_added$&"
+Within an ACL this variable contains the headers added so far by
+the ACL modifier add_header (section &<<SECTaddheadacl>>&).
+The headers are a newline-separated list.
+
 .vitem &$home$&
 .vindex "&$home$&"
 When the &%check_local_user%& option is set for a router, the user's home
@@ -13093,6 +13099,7 @@ Those options that undergo string expansion before use are marked with
 .option accept_8bitmime main boolean true
 .cindex "8BITMIME"
 .cindex "8-bit characters"
+.cindex "log" "selectors"
 This option causes Exim to send 8BITMIME in its response to an SMTP
 EHLO command, and to accept the BODY= parameter on MAIL commands.
 However, though Exim is 8-bit clean, it is not a protocol converter, and it
@@ -13106,6 +13113,11 @@ A more detailed analysis of the issues is provided by Dan Bernstein:
 &url(http://cr.yp.to/smtp/8bitmime.html)
 .endd
 
+To log received 8BITMIME status use
+.code
+log_selector = +8bitmime
+.endd
+
 .option acl_not_smtp main string&!! unset
 .cindex "&ACL;" "for non-SMTP messages"
 .cindex "non-SMTP messages" "ACLs for"
@@ -27320,7 +27332,9 @@ receiving a message). The message must ultimately be accepted for
 any ACL verb, including &%deny%& (though this is potentially useful only in a
 RCPT ACL).
 
-If the data for the &%add_header%& modifier contains one or more newlines that
+Leading and trailing newlines are removed from
+the data for the &%add_header%& modifier; if it then
+contains one or more newlines that
 are not followed by a space or a tab, it is assumed to contain multiple header
 lines. Each one is checked for valid syntax; &`X-ACL-Warn:`& is added to the
 front of any line that is not a valid header line.
@@ -27338,7 +27352,9 @@ message is rejected after DATA or by the non-SMTP ACL, all added header lines
 are included in the entry that is written to the reject log.
 
 .cindex "header lines" "added; visibility of"
-Header lines are not visible in string expansions until they are added to the
+Header lines are not visible in string expansions
+of message headers
+until they are added to the
 message. It follows that header lines defined in the MAIL, RCPT, and predata
 ACLs are not visible until the DATA ACL and MIME ACLs are run. Similarly,
 header lines that are added by the DATA or MIME ACLs are not visible in those
@@ -27347,6 +27363,8 @@ passing data between (for example) the MAIL and RCPT ACLs. If you want to do
 this, you can use ACL variables, as described in section
 &<<SECTaclvariables>>&.
 
+The list of headers yet to be added is given by the &%$headers_added%& variable.
+
 The &%add_header%& modifier acts immediately as it is encountered during the
 processing of an ACL. Notice the difference between these two cases:
 .display
@@ -33812,6 +33830,7 @@ log_selector = +arguments -retry_defer
 The list of optional log items is in the following table, with the default
 selection marked by asterisks:
 .display
+&` 8bitmime                   `&  received 8BITMIME status
 &`*acl_warn_skipped           `&  skipped &%warn%& statement in ACL
 &` address_rewrite            `&  address rewriting
 &` all_parents                `&  all parents in => lines