postfix sends with ns2.domain.com
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!