[Mimedefang] all_spam_to and mimedefang - accessing envelope sender addresses
Mark G. Thomas
Mark at Misty.com
Fri Aug 15 14:12:19 EDT 2008
My SpamAssassin all_spam_to listed recipients are still getting spam
filtered on messages they are BCC'd on. I take it SpamAssassin
uses TO/CC/BCC fields to match on all_spam_to. When SpamAssassin is
run via MimeDefang though, I'd think MimeDefang could and probably
does make accessible envelope recipient information to SpamAssassin.
Is there some way I can use spamassassin rules to match the envelope
recipient instead of TO/CC/BCC headers, for recipient-specific rules
like all_spam_to? Alternatively, does anyone have any examples of
accomplishing this in mimedefang-filter (via filter_recipient?)?
I see the example in mimedefang-filter(5), but I really just want
to bypass all SpamAssassin tests for some given list of possible
recipients, or compensate the score.
Sure, I could configure sendmail to stick it in a header, then use a
SpamAssassin header rule, but then that would disclose BCC recipients.
There are really two related things I'd like to accomplish:
- Whitelist all inbound messages to certain recipients, using envelope
information instead of TO/CC/BCC headers.
- Be able to accept a whitelisted recipient copy, but still reject
for other recipients of that same message.
I don't care whether I perform these things in mimedefang-filter or in
a SpamAssassin rule.
I think I remember mention of being able to do the second thing with
sendmail-8.14.x milter support (I'm still running 8.13.8), but I don't
remember the specifics and am guessing others here have probably already
done this, so any pointers to details or examples would be very welcome.
Mark G. Thomas (Mark at Misty.com)
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