>I was wondering why people from other servers can use my SMTP server when I
>specifically have it setup in the SMTP Security to only Relay Mail for a
>select group of hosts?
All msg headers are spoofable, none can be trusted, relaying for users or
hosts is an invitation to get blacklisted, although you might get away with
it in the short term.
Relay for ip's AND ip spoofing blocked at your border router is the only
trustable config.
Len
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