[PLUG] Postfix send only...
robinson-west user
plug_1 at goose.robinson-west.com
Sun Oct 7 03:36:11 UTC 2007
How do I configure postfix to reject any
attempt from an untrusted remote site to
initiate communication without causing
outgoing connections to fail?
------- /-----\
| HUB |--->---| NET |
------- \-----/
Notice the arrow which means, only from the HUB.
If someone tries to initiate email transfer to
HUB from NET directly, I want them to get,
550 this is not a relay. Noone should be
attempting to do this anyways because my
mailhub receives NET email from one of two
dedicated relays which are listed as the
mail exchangers for the NET.
An only out server on the relay machines
strikes me as an option, but I don't know
how to implement one.
Michael C. Robinson
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