>and are not using a efax.com mail server
Use SPF to detect this. If efax.com has no SPF record, create your own SPF
record and overwrite the policy for efax.com.
Thomas
Von: "Daniel L. Miller" <dmil...@amfes.com>
An: ASSP development mailing list <assp-test@lists.sourceforge.net>,
Datum: 17.08.2012 01:30
Betreff: [Assp-test] Block spoofed addresses
I'm starting to get some messages from someone spoofing efax.com. As I
actually use their service, I do need to receive their messages. How
can I block these?
The spoofed messages show a valid efax.com sender address, a garbage
HELO, are actually sending to a spamtrap address (unfortunately I'm
using a recipient re-write rule for efax.com senders so I'm now starting
to see this crap) and are not using a efax.com mail server.
--
Daniel
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