How to block delivery of MAILER-DAEMON (<>) messages?

[Matt Kettler]

At 10:47 AM 12/10/2004, Andreas Piper wrote:
>  am tried to define a ruleset for 'Deliver Cleaned Messages' to exclude these
>messages from delivery, but I did not succeed, because the envelope-from in
>these messages is <>, and the rule
>From:   /^$/    no
>seems not to be working.
>
>How can I solve this problem?

First, read the RFCs and understand that by inhibiting the null return path
you are violating RFC 822. It's a requirement to accept bounces in the
general case. Inhibiting them will also prevent any real bounce messages
from reaching your network. If you fully understand the implications of
what you are doing, and intend to only block these messages for a short
period of time to alleviate the problem, go on.  If you have read the RFCs
and still intend to block permanently, please find a replacement admin and
resign your position.

Second, the "deliver cleaned messages" option only applies to virus
infected emails that have been cleaned. It won't affect non-virus messages.

Your best bet is to use the "Is Definitely Spam" ruleset, coupled with
"Definite Spam Is High Scoring = yes", and "High Scoring Spam
Actions=store" to quarantine them, or forward them to a common "bounces"
user account so you can review them. I'd strongly recommend not using
delete here, but it is possible.

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