I have set up postfix to listen as below using:
inet_interfaces = 10.20.30.40
a...@ecocore:~$ netstat -an |grep -i "listen "
tcp 0 0 10.20.30.40:25 0.0.0.0:* LISTEN ***
I am not allowed to open it on 127.0.0.1 due to my vserver hosting rules.
The point is that I don't want to have port 25 open to the world, since I don't
want to receive any emails on this system, I just want to send.
I can't find a way to get postfix to shut that port.
I also don't want to use nullmailer or other smtp-relayers.
As stated above:
It just bugs me from a security point of view that the whole world can
see port 25 open when they look at that machine and some might take it
into their heads to aim their spam canons at it.
Admittedly they can't do much except flood my inbox for the two users on the
system, but I don't want to give anyone the chance to try anything.
Hopefully this explains my situation unambiguously.
BTW it's postfix v2.5
Regards
Adam
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