I followed the steps found here: http://flurdy.com/docs/postfix/ On Ubuntu Edgy. I can see SquirrelMail from a browser. When I log in to SquirrelMail my mail.info shows a successful login but the browser shows: ERROR: Connection dropped by IMAP server. Query: SUBSCRIBE "INBOX.Sent" So, I telnet into 127.0.0.1 143, and try a couple things (username = mark): a list "Mail" "*" a OK LIST completed a list "virtual" "*" a OK LIST completed a list "mark" "*" a OK LIST completed a create inbox a NO INBOX already exists! a list "inbox" "*" * LIST (\HasNoChildren) "." "INBOX.Sent" a OK LIST completed a create INBOX.Trash a OK "INBOX.Trash" created. a list "inbox" "*" * LIST (\HasNoChildren) "." "INBOX.Trash" * LIST (\HasNoChildren) "." "INBOX.Sent" a OK LIST completed a create INBOX.Drafts a OK "INBOX.Drafts" created. a subscribe INBOX.Sent * BYE [ALERT] Fatal error: No such file or directory Connection closed by foreign host. If I try subscribe INBOX I get the same answer. Now... if I go to to browse the mail folder, I get this: [email protected]:/var/mail/virtual/mark$ ls -a . .. .Drafts .Sent .Trash [email protected]:/var/mail/virtual/mark$ I created the 'mark' folder in virtual, and assigned virtual as the group and owner. Now... the HowTo said something about things running chrooted, and this could cause a problem with Debian based distros (Ubuntu is Debian based). Could this be the problem, that Courier can't do what it needs with file/folder access? I've also tried Evolution to connect, but I'm assuming that if I can't subscribe via telnet, no other client can either. But I did also try Evolution using POP, and that failed. Please help.