ERROR: Connection dropped by IMAP server
Ubuntu 7.04 server amd64
SquirrelMail version 1.4.11
The Mail Server has been running for sometimes. Previously whenever a new account is created the Maildir including its subdirectories will be automatically created upon receipt of the 1st mail.
Just created a new account and sent a new mail to it. But no Maildir was created automatically. On starting SM and login the new account a warning "ERROR: Connection dropped by IMAP server" popup, unable to login. Other users login w/o problem.
Please advise where shall I check and how to fix the problem. TIA