IMAP command

[dwmgr@misdwp01 ~]$ telnet mail1.xxx 143
Trying xxx.xxx.xxx.xxx...
Connected to mail1.xxx.
Escape character is '^]'.
* OK The Microsoft Exchange IMAP4 service is ready.

Trying xxx.xxx.xxx.xxx...
Connected to xxx.xxx.xxx.xxx.
Escape character is '^]'.
* OK The Microsoft Exchange IMAP4 service is ready.
A login xxx@xxx.xxx xxx
A OK LOGIN completed.
B select INBOX
* 0 EXISTS
* 0 RECENT
* FLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)
* OK [PERMANENTFLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)] Permanent flags
* OK [UIDVALIDITY 66390] UIDVALIDITY value
* OK [UIDNEXT 896] The next unique identifier value
B OK [READ-WRITE] SELECT completed.
C logout
* BYE Microsoft Exchange Server 2010 IMAP4 server signing off.
C OK LOGOUT completed.
Connection closed by foreign host.