Testing IMAP

Run the program imtest on the mail machine with a test username:

[root@mail postfix]# imtest -a foobar@foobar.com mail.foobar.com
S: * OK mail.foobar.com Cyrus IMAP4 v2.2.12-Invoca-RPM-2.2.12-1.1.fc3 server ready
C: C01 CAPABILITY
S: * CAPABILITY IMAP4 IMAP4rev1 ACL QUOTA LITERAL+ MAILBOX-REFERRALS NAMESPACE UIDPLUS 
ID NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT THREAD=ORDEREDSUBJECT 
THREAD=REFERENCES ANNOTATEMORE IDLE STARTTLS LISTEXT LIST-SUBSCRIBED X-NETSCAPE
S: C01 OK Completed
Please enter your password: 
C: L01 LOGIN foobar@foobar.com {4}
S: + go ahead
C: <omitted>
S: L01 OK User logged in
Authenticated.
Security strength factor: 0
. logout
* BYE LOGOUT received
. OK Completed
Connection closed.

If you see the word ''Authenticated'', imap is working.