"E. Scichilone" wrote:
Hmm, the point is, that I have heard some talking about something like a SMTP-proxy (?), which IIRC was meant as one machine acts like a firewall and "filters" and forwards mails to another machine, which is the Mailserver. I´m not sure if this is the right description (its a pretty long time ago), but maybe it could help you help me. Could this chain of 2 machines possibly be simulated by a forward-policy in my iptables-rules?
such things exist but they're mostly useless. no proxy that i know has so many features to e.g. block spam etc. like a smtpd has (postfix in my case). Instead of putting a smtp proxy on your firewall use iptables to forward the connections from your firewall's port 25 to the mailserver.
Thx and have a nice weekend
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