engarde-users July 2002 archive
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engarde-users: [EnGarde] Postfix - rejecting spoofed mail from:

[EnGarde] Postfix - rejecting spoofed mail from:

From: John W. Cahill Jr. <jwcahill_at_nospam>
Date: Fri Jul 05 2002 - 14:38:46 GMT
To: EnGarde Users List <engarde-users@engardelinux.org>


Greetings Users!

It's been awhile since I've posted a question, and as I cannot find a 'good' answer for me on google, postfix.org or the SAMS Postfix book, I'm going to the community.

My Postfix is NOT an open relay and has been tested successfully. However it is possible for someone to send email from a spoofed address to me. I have seen all the options to reject inbound messages, however I have not found one that will work with all those mis-configured email servers sending me email. I need to allow them, but I don't need to see my domain in the mail from: header line.

I have all ideas I may be able to use the header_check statement in the main.cf and block anything with /^from: mydomain.com$/. This box will NEED to, in the future, be able to allow my internal users to email relay, which I think I have covered.

Ideas?

Thanks,

John --
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