* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
* CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN
A001 OK Pre-login capabilities listed, post-login capabilities have more.
* ID NIL
A002 OK ID completed.
A003 BAD Error in IMAP command received by server.
* BYE Logging out
A004 OK Logout completed.
