Hello, Thanks for the excellent guide for ISPConfig 3/Ubuntu 10.04. The produced system is very well integrated, and rather easy to use. I do have one issue, though, in that created email accounts (firstname.lastname@example.org) are unable to login. I have tried direct IMAP login, and login through SquirrelMail, and both fail. Here is a quick transcript: $ telnet server 143 Trying 192.168.1.15... Connected to server.domain.tld. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc. See COPYING for distribution information. 01 LOGIN email@example.com password 01 NO Login failed. ^] telnet> quit Connection closed. And, the mail log: Aug 9 12:48:03 server imapd: Connection, ip=[::ffff:192.168.1.11] Aug 9 12:48:15 server imapd: LOGIN FAILED, firstname.lastname@example.org, ip=[::ffff:192.168.1.11] Aug 9 12:48:24 server imapd: Disconnected, ip=[::ffff:192.168.1.11], time=21 I've checked that the user exists, and that the virtual mail folders were created. I've also reset the password for the user. Not quite sure where to go, from here. Thanks for any help!