Connection log (2013-03-15 14:07:42 +0000):
Trying to disconnect nicely...
C: C5 LOGOUT
S: * 788 RECENT
S: C4 OK NOOP completed
S: * BYE IMAP server shutting down
S: C5 OK LOGOUT completed
Clearing connection to imap.secureserver.net
Synchronizing mailbox: INBOX
Selecting mailbox: INBOX
Clearing connection to imap.secureserver.net
Trying to connect to imap.secureserver.net on port 993
Successful connection.
Initiating SSL/TLS...
Setup of SSL/TLS connection complete.
S: * OK [CAPABILITY IMAP4rev1 UNSELECT STARTTLS ID CHILDREN NAMESPACE IDLE] Courier-IMAP ready. Copyright 1998-2004 Double Precision, Inc.  See COPYING for distribution information.
C: C0 LOGIN ••••••••••
S: C0 OK LOGIN Full IMAP support is enabled
C: C1 CAPABILITY
S: * CAPABILITY IMAP4rev1 UNSELECT STARTTLS ID CHILDREN NAMESPACE IDLE
S: C1 OK CAPABILITY completed
C: C2 ID ("name" "MailMate" "version" "r3255" "vendor" "Freron Software" "contact" "imap-id@freron.com")
S: * ID ("name" "Courier-IMAP" "remote-host" "50.94.94.47" "version" "3.1.0.11")
S: C2 OK ID completed
C: C3 SELECT INBOX
S: * FLAGS (\Draft \Answered \Flagged \Deleted \Seen \Recent)
S: * OK [PERMANENTFLAGS (\Draft \Answered \Flagged \Deleted \Seen)] Limited
S: * 1892 EXISTS
S: * 0 RECENT
S: * OK [UIDVALIDITY 1] Ok
S: * OK [UIDNEXT 23946] Predicted next UID
S: C3 OK [READ-WRITE] SELECT completed.
C: C4 NOOP
S: * 788 EXISTS
Error: An EXISTS response decreased the number of messages. This should never happen.