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From Terry Carmen <>
Subject Re: use passwd file to control senders
Date Fri, 13 Nov 2009 17:00:29 GMT
Adam Katz wrote:
> Martin Gregorie wrote:
>> Do we know the OIP is using sendmail?
> Yes.  Here's a quote:
>>> I'm using SpamAssassin 3.2.3, milter-limit and sendmail
>> Postfix checks local recipients against /etc/passwd and /etc/aliases by
>> default. It can also be configured to apply the same checks to local
>> senders though the defajult is not to check. 
>> I'd hope that other MTAs have the same capabilities.
> That's not what I was talking about.  Obviously if a MTA can't find
> the recipient, it won't deliver.  I'm talking about the *other*
> recipients, e.g.
> To: Foo Bar <>
> Cc: Foo Baz <>
> If user foo exists but user fbaz does not, you should expect that an
> MTA will reject fbaz but deliver that same message to foo.  I'm
> talking about a way to cause SpamAssassin (or something else,
> whatever) to note the fact that a *different* recipient, fbaz, doesn't
> exist, and to read it from the headers rather than the envelope
> recipients (the way an MTA does).
If your MTA is configured properly, SA will never see a message for a 
non-existent recipient.

What are you trying to do?


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