Brain fart. Forgot to modify the "/etc/postfix/transport" file with the new domain.
From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Security Admin (NetSec) Sent: Thursday, January 16, 2014 11:25 AM To: postfix-users@postfix.org Subject: "Mail loops back to itself" error I recently added a new domain to my postfix mail gateway. I use the "relay_domains = newdomain, domain2, ..." in "main.cf" to add accepted domains. I also updated my "relay_recipients" file with the following line: "@newdomain.com x OK" All of my other domains send and receive email with no issue. The new domain added can send out mail, but when receiving mail the following error occurs in my maillog: "to=<n...@newdomain.com<mailto:n...@newdomain.com>>, relay=mail.someotherdomain.com[uuu.vvv.xxx.yyy]:25, delay=0.33, delays=0.04/0.01/0.28/0, dsn=5.4.6, status=bounced (mail for newdomain.com loops back to myself)" If anyone has an idea on how to correct this, much appreciated. Edward Ray