Restrict line lengths in bounces. Bug 1760

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index cb913d6f1f481e5566f6f812173b17e447430636..cd06de8d980256ec8411f9b1cb5cd1b4f527ce42 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -13786,6 +13786,7 @@ See also the &'Policy controls'& section above.
 .row &%bounce_message_file%&         "content of bounce"
 .row &%bounce_message_text%&         "content of bounce"
 .row &%bounce_return_body%&          "include body if returning message"
+.row &%bounce_return_linesize_limit%& "limit on returned message line length"
 .row &%bounce_return_message%&       "include original message in bounce"
 .row &%bounce_return_size_limit%&    "limit on returned message"
 .row &%bounce_sender_authentication%& "send authenticated sender with bounce"
@@ -14094,6 +14095,24 @@ error that is detected during reception, only those header lines preceding the
 point at which the error was detected are returned.
 .cindex "bounce message" "including original"
 
+.option bounce_return_linesize_limit main integer 998
+.cindex "size" "of bounce lines, limit"
+.cindex "bounce message" "line length limit"
+.cindex "limit" "bounce message line length"
+This option sets a limit in bytes on the line length of messages
+that are returned to senders due to delivery problems,
+when &%bounce_return_message%& is true.
+The default value corresponds to RFC limits.
+If the message being returned has lines longer than this value it is
+treated as if the &%bounce_return_size_limit%& (below) restriction was exceeded.
+
+The option also applies to bounces returned when an error is detected
+during reception of a messsage.
+In this case lines from the original are truncated.
+
+The option does not apply to messages generated by an &(autoreply)& transport.
+
+
 .option bounce_return_message main boolean true
 If this option is set false, none of the original message is included in
 bounce messages generated by Exim. See also &%bounce_return_size_limit%& and