postfix sends with ns2.domain.com

[iceget]

dear team,

i have installed a ispconfig 2.2.38 system.

alle working done but only i have on problem:
when i sending a email, postfix sends not with ns1.DOMAIN.com (main server name) but with the ns2.DOMAIN.com (name and ip).

how can i change it? i want send the mails with the mainip from the server (ns1).

can you help me?

thank you very mich!

many greets
--
markus

[iceget]

dear team,

thank you!

i have installed 2 network cards. on both network cards in the network configuration section i had two same gateways (eth0 and eth1). i have removed the gateway from eth1 (all on the same subnet).

now it works!

thank you!

kind regards
--
markus