Greetings list Platform: FC4 Package(s): Postfix 2.2.2, Dovecot 0.99.14 I've iterated... I've Googled... and now posting ;-) When emailing from the above stand-alone internet email server, the originating email addy renders as: user@xxxxxxxxxxxxxxxxxxxx Where does the 'localhost' in localhost.d0main.tld come from? I've also hashed out the $myorigin reference to localhost in: /etc/postfix/main.cf.default, // which I know shouldn't be done but needed to prove that Postfix wasn't loading this var from main.cf.default as the preferred default And even after restarting Postfix, ~ /usr/sbin/postconf -d | grep -i 'localhost' still reports: mydestination = $myhostname, localhost.$mydomain, localhost Also: -----8<----------8<----------8<----- ~ cat /etc/hosts 127.0.0.1 localhost.localdomain localhost 192.168.1.10 h0st.d0main.tld h0st -----8<----------8<----------8<----- ~ cat /etc/postfix/main.cf myhostname = h0st.d0main.tld mydomain = d0main.tld myorigin = $mydomain inet_interfaces = all mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mynetworks_style = host mynetworks = 127.0.0.0/8 -----8<----------8<----------8<----- I'd appreciate any insight into this. TiA Blessings, Stuart -- Then you will know the truth, and the truth will set you free.