I am running postfix on freebsd and anytime I try to send email out through Outlook I get an relay access denied 554. I anc recieve email just fine I can even use the webmail client to send email out. This just started happening about two days ago. I haven't been editing any files. I recently had to take over email administration duties. I made sure the username and password are correct in Outlook and this is happening to other users as well. The mynetworks contains my local network. Does it matter that the main.cf.bak is configured instead of the main.cf. I am a little rusty on postfix and freebsd.