Hi, I get a combination of "mail loops back on itself" and "relay access denied" on a new ISPConfig set-up. As far as I can see the Postfix (main.cf and master.cf) are as it should be. In the database - the domain is active in mail_domain as is the mailbox. Under my working ISPConfig systems - when I entered a new domain (Mail Domain) - there is usually a DNS name under "Server" - but it's blank - could this have anything to do with it? Running: ISPConfig 3.0.5.4p3 and Debian 7 Any other suggestions? Thanks, Keith