X-Git-Url: https://git.madduck.net/etc/mailfilter.git/blobdiff_plain/3f6646c44e476bc281ac639269b3a28d75270ff1..90e7c2b254d33d781ed8f9932713a2edbb775fae:/procmail/attach-mdn

diff --git a/procmail/attach-mdn b/procmail/attach-mdn
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+# certain crap mailers don't use standard headers to thread messages:
+# http://madduck.net/blog/2009.05.20:read-notifications-standards-and-microsoft/
+# this recreates at least the In-Reply-To header, but not the References list.
+# Better than nothing.
+:0
+* ^Content-class: urn:content-classes:mdn
+* !^In-Reply-To:
+*$ B ?? ^Original-Message-ID:$RE_EXTRACT_HEADER_VALUE
+{
+  LOG="attach-mdn:  unthreaded MDN in reply to $MATCH$NL"
+
+  :0 fw
+  |$FORMAIL -A "In-Reply-To: $MATCH"
+}