Bad sender address syntax ..

[bajodel at gmail.com]

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 ;-)
`. `'
   `-