just a quick postfix hostname question,

i had a issue where i was getting a helo rejected message.
since then i have had the reverse dns sorted by the isp and my reverse dns is now working. however i also had the wrong server name setup and have since adjusted that and as far as i can see in the config - both in ISPConfig and the postfix main.cf file are showing the correct server name. however... when i run a test to check the email function it still comes up with a "Reverse DNS does not match SMTP Banner" error.
note this is actualy the second time i have adjusted the server name but i didnt run this test straight after changing the server name the first time...

so my question is, does it take time to replicate the server name? i had thought it was pulling that info straight from the server.

if it is, is there somewhere elsie in ispconfig 3 files that also needs to be updated?

i have also adjust the hosts file and the hostnames files to match the server name.

 

cheers for your response till.

turns out i was lookin in all the wrong places and i had in fact only updated the "mydestination" address...

the actual line i should have been changing is at the very bottom of the mail.cf file called "myhostname"

 

May the hostname by different from the mailname? E.g. may i name my server (/etc/hostname, /etc/hosts) foo.bar.de and my mailserver bar.bar.de (/etc/mailname, /etc/postfix/main.cf)?

Thanks for Answer,
Daniel.