Another sendmail relaying problem.

[Franco]

Correct Steve, this is my problem.


Cowles, Steve ha scritto:
> Franco wrote:
> 
>>Sorry, i speach very bad english,
>>i'm already installed spamassassin with clamav antivirus and
>>all work fine i want block the e-mail sent through my smtp
>>with mail from as one of my local user.
>>
> 
> 
> I think I understand what Franco is asking. He wants to stop an external
> sender (spammer) from setting their From: address to appear like its coming
> from his domain space and then having his MTA accept this e-mail for local
> delivery. 
> 
> Correct?
> 
> BTW: By default, sendmail should NOT be relaying (as in open relay) to
> anyone outside your domain space when someone sets their "From:" address to
> be the same as your domain space. It should accept the e-mail for local
> delivery only, unless overridden. Unfortunately, I don't remember how to
> implement what your asking using sendmail. It's a piece of cake in postfix
> though. Sorry!
> 
> Steve Cowles
> 
>