I followed all the steps in the "Virtual Users And Domains With Postfix, Courier And MySQL (Fedora 8)" and finished the setup. The link of this HowTo is http://www.howtoforge.com/virtual-users-and-domains-postfix-courier-mysql-fedora8 After I finished the setup, I tried "telnet localhost 110", and entered user and pass. I got the error [root@srv1 ~]# telnet localhost 110 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. +OK Hello there. user firstname.lastname@example.org +OK Password required. pass test123 -ERR Maildir invalid (no 'cur' directory) Connection closed by foreign host. I check the /home/vmail folder. There is no domain myserver.com over there. I read the HowTo again, but there are no steps to create domain folder, and Maildir, cur, tmp folders in the vmail folder. Does anyone knows how to force Postfix to create the folder if they are not existing? I used to use qmail and vpopmail. It creates the domain and Maildir folders when you creating the user accounts. However, this HowTo only tells me to create accounts in MySQL directly using phpMyAdmin. Please help. Thank you.