Very newbie relaying question

[Alex Neuman van der Hans]

René Berber wrote:
> You are using the old syntax, which may not be what you want.
>
> If all your server IPs are public then you are on the right track, if 
> your servers have internal/external addresses you are better off using 
> the internal ones.
>
> An example of what you can do is access as:
>
> # Allow relying from LAN
> Connect:192.168.0                       RELAY
> Connect:127.0.0.1                       RELAY
> Connect:exchange_server_IP              RELAY
> # Whitelist
> Connect:other_external_IP               RELAY
>
You're assuming there is a zero percent chance any of the machines on 
the internal network may be spam zombies. This isn't usually true.

You might want to look into SMTP AUTHentication and/or allow relaying 
only from the (ugh) exchange box, which should be set to only allow 
relaying from AUTHenticated users.