Il 12/07/2012 18:13, Amedeo Rinaldo ha scritto:
..[CUT].. ## mail.log snip .. Jul 11 09:16:46 mx20 postfix/qmgr[4250]: 4082940175: from=<@externaldomain.tld>, size=4252, nrcpt=1 (queue active) ..
Ok.. I've investigated a little and it come out that my postfix is accepting email addresses with an empty local-part. The postfix 'strict_rfc821_envelopes' configuration parameter handles also this behaviour.. (default: disabled). Amavis don't love it too much ( ""@domain.tld ) and "gracefully" stuck .. with a probable DoS risk.
So, my fault.. I wasn't aware of this requirement (strict_rfc821_envelopes=yes).
Ciao -- .''`. *Amedeo Rinaldo* : :' : debian addicted ;-) `. `' `-
