21 Jan
2009
21 Jan
'09
1:25 p.m.
On 1/21/2009, Giuliano Gavazzi (dev+lists@humph.com) wrote:
you are much better off rejecting those even before seing the DATA, if that address is in the envelope sender, or after, if it is only in the From: message header.
? If he did that, then he wouldn't see his own messages to this list.
But I agree that fighting this kind of spam is best done at the MTA level, and isn't really a dovecot (or sieve) issue.
The postfix backscatter readme is a good start, esppecially is you are using postfix - and if you aren't, why aren't you? ;) ... but the concepts can be applied to any MTA...
http://www.postfix.org/BACKSCATTER_README.html
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Best regards,
Charles