[Mailman-Users] SPAM getting through on moderated lists

John A. Martin jam at jamux.com
Thu Aug 14 15:56:49 CEST 2003

Hash: SHA1

>>>>> "Nuno" == Nuno Serra
>>>>> "[Mailman-Users] SPAM getting through on moderated lists"
>>>>>  Wed, 13 Aug 2003 22:16:20 +0200

    Nuno> Hi, SPAM email where the from address appears as the list
    Nuno> itself is bypassing the list rules for posting and is
    Nuno> automatically accepted.

Hmm.... That makes for IMHO an interesting question.  Since many, if
not most MTAs can be configured to reject mail from specific envelope
senders, usually specified as regular expressions, the question is

        what if any envelope senders related to mailman lists (and not
        from our local {host,net}) can be rejected by an MTA that is
        dedicated to handling incoming mail for only the lists.

It is advantageous to reject unwanted mail during the SMTP
conversation rather than later.

It should be pretty easy to cause a MTA reject all incoming mail from
non-local relays with any envelope sender address appearing among the
Mailman aliases.

Will this do no harm?

    Nuno> How can I stop it without turning emergency moderation on
    Nuno> (not sure if this will stop them or not)?

If the list shows up as a header sender, have you looked at "Hold
posts with header value matching a specified regexp" among the Privacy




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