Please help me sort out my e-mail problem

[JustTheMessenger]

I have installed Postfix.
Postfix was configured. I can telnet to Postfix. Postfix is accepting mail correctly from the outside world.

I have installed Courier-IMAP.
Courier-IMAP configuration has been left default. I can telnet to Courier-IMAP.

I have created a UNIX user account (user name: lol) (password: 11).

I am using Thunderbird as my mail client. Thunderbird can see both SMTP (Postfix) and IMAP (Courier-IMAP) servers. I am using the user name "lol" and password "11" to login - the problem is that Thunderbird is saying I have the wrong user name and password.

I have tried logging in via Telnet, and this is what I get:

telnet localhost 143
Trying ::1...
Connected to localhost.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc. See COPYING for distribution information.
AB LOGIN "lol" "11"
* BYE [ALERT] Fatal error: No such file or directory: No such file or directory
Connection closed by foreign host.

What have I done wrong?

[rcgreen]

telnet localhost 143
Trying ::1...
Connected to localhost.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc. See COPYING for distribution information.
AB LOGIN "lol" "11"
* BYE [ALERT] Fatal error: No such file or directory: No such file or directory
Connection closed by foreign host.

Could it be as simple as that you put your user name and password in quotes?

$ telnet imap.example.com 143
Trying 10.0.0.12...
Connected to imap.example.com.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THRE
AD=REFERENCES SORT QUOTA IDLE AUTH=CRAM-MD5 SMAP1 KEYWORDS ACL ACL2=UNION STARTT
LS XMAGICTRASH] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc.
See COPYING for distribution information.
0 login testuser testpass

Tutorial: troubleshooting IMAP server configuration