Am 09.04.2011 14:58, schrieb Wietse Venema: > Voytek Eymont: >> >> I'm setting up a mail server on a virtual server >> >> smtp banner is set to myhost.mydomain >> >> reverse dns resolves to the data centre IP address >> >> is that going to cause me problems in the future ? > > Assuming that the Postfix machine is behind a NAT of some kind: > > myhostname: use the name of the internal IP address > smtpd_banner: use the name of external IP address > smtp_helo_name: use the name of external IP address > > Don't listen to people who say use myhostname in smtpd_banner
:-) i would use the same hostname in fornt of and behind the NAT because normally in the LAN behind the nat a name-server is running, so there is no difference NAT/Public
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