[IMail Forum] SMTP Relay

[Phil Daws]

Hi ...

I am trying to get my head around mail relay ... We want to block people
from relaying off our server except for valid customers. I have set the
option to be "Relay for Local Hosts", so far so good. But on checking it via
mail-abuse.org it says it is open. The message that got through was Mail
From: spamtest@[0.0.0.0]  Note: substituted 0.0.0.0 for proper IP address!
So from this it would seem that the anti-relay option does not work, or am I
missing something???

cheers


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