Installed Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 9.04) Logged into Squirrelmail. got ERROR- Connection dropped by imap-server I did the Mailx thing. I have yet to disable the plugins as a suggested fix because I do not know how to do that. Please tell me how. After install mutt I tried mutt -f imap://localhost/ It failed certificate --did not match. I typed "a: to accept. Did a mutt -f imap://localhost/ This time I got Username at localhost: root I pressed Enter Password for root@localhost I entered my root password, the same one I enter afte a sudo su command. I got Temporary problem- try again later. Login failed I did try later (a few hours) again and the a few hours again Same result. I sent an email to firstname.lastname@example.org using gmail. It was successfully sent. That did not help the problem. I tried /var/log/mail.err Got Permission Denied Tried /var/log/maillog file Got no such file or directory I tried telnet localhost 143 Got OK I hit enter I got * NO Error in IMAP command received by server. Then entered <] I got telnet> Entered quit Got back to root@www:/home/albert# Did a telnet localhost 25 Then ehlo localhost Good results. I have spent hours on Google with this problem. No definitive fix except for "send an emailwill create malbox" Which did not help .