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.