I am using FC3+Dovecot+ISPConfig+Uebimiau webmail+ ISPConfig's built-in firewall I typed the following command in the shell: chkconfig imap off chkconfig imaps off chkconfig ipop3 off chkconfig pop3s off chkconfig dovecot on /etc/init.d/dovecot start Next I went into ISPConfig and place a checkmark in the Maildir checkbox. Next,I edit /etc/postfix/main.cf and uncomment the following line: #home_mailbox = Mailbox home_mailbox = Maildir/ Then sent an email in uebimiau webmail to my email address email@example.com and also c.c. to firstname.lastname@example.org on this server. I found a Maildir folder under my user's directory with the following subfolders: /webx_user01/maildir/new /webx_user01/maildir/cur /webx_user01/maildir/trash But, there is no new mail in the webmail box or in the user's /new folder when I relogin the webmail! The website of www.mydomain.com is working well. Any idea?