postfix-users October 2010 archive
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postfix-users: Re: hide (do not disclose) reject reason to clien

Re: hide (do not disclose) reject reason to client but log as usual

From: mouss <mouss_at_nospam>
Date: Wed Oct 13 2010 - 19:03:34 GMT
To: Postfix users <postfix-users@postfix.org>

  Le 13/10/2010 00:43, Costin Gusa a écrit :
> see, mouss, that's the reason in my systems this email would have
> never got a chance for "220 OK", even without any external spam filter
> in place.
>
> On Tue, Oct 12, 2010 at 22:42, The Doctor<doctor@doctor.nl2k.ab.ca> wrote:
>> Doctor Who saying in the 1970s.
>>
>> What do I need to reverse.
>>
>> Tried another MTA and got reports that people were not getting e-mail.
>>
>> All right switch back.
>>
>> Forgot that the 'sendmail' was not the correct one.
>>
>> No problem, just use the postfix sendmail.
>>
>> Hmm!! No mail is getting delievered.
>>
>> What did I forget?
>> --
>> Member - Liberal International This is doctor@nl2k.ab.ca Ici doctor@nl2k.ab.ca
>> God, Queen and country! Never Satan President Republic! Beware AntiChrist rising!
>> http://twitter.com/rootnl2k http://www.facebook.com/dyadallee
>> Are you a real human: http://www.cuttingedge.org/news/n1334.cfm
>>
> ...because of the following header:
>
> Received: from localhost (localhost.nl2k.ab.ca [127.0.0.1])
> by doctor.nl2k.ab.ca (Postfix) with ESMTP id 2030912CFC90
> for<postfix-users@postfix.org>; Tue, 12 Oct 2010 15:01:47 -0600 (MDT)

then you're wrong. localhost is ok in an internal header. while you can
check internal headers for spam signs, you should play on the safe side
here. if you're new to the game, go on. but believe me, it is a
"marathon" and you should not run too fast in the beginning! do not try
to stop any one spam at the cost of spending your day and at the cost of
blocking legitimate mail. the goal is not to block _all_ spam. the goal
is to make the costs of dealing with spam low enough.