Am 20.01.2012 09:18, schrieb Nikolaos Milas: > Hello, > > As our internal (main) mail server only accepts mail from two mail gateways > and users submit their mail through > submission port (587), I am planning to explicitly allow accepting mail on > port 25 ONLY by our mail gateway servers > (and the mail server itself). So, in main.cf:
why are you not only opening from the allowed addresses in the packet-filter (iptables)? so you have no log-entries from spammers all over the world and any protection should generally happen as wide as possible before the service
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