ISSUE When an email is sent from the server to a Gmail account it fails to deliver. The postfix is used as Mail Transfer Agent to deliver emails.   SYMPTOMS In the /var/log/maillog the following error appears [root@dbpilot ~]# cat /var/log/maillog Apr 17 10:41:38 ns7000905 postfix/pickup[38640]: 16E1046B825C6: uid=0 from=…