Talking IMAP4 (to do test for Dekko2 config) with OpenSSL

guru

For those who must/will check the IMAP config values (what I have had to do last night) I've here en example how to talk IMAP4 with a remote server using OpenSSL's s_client:


$ openssl s_client -crlf -connect pod51010.outlook.com:993
...
* OK The Microsoft Exchange IMAP4 service is ready. [QgBOADcAUABSADAANQBDAEEAMAAwADEAOAAuAG4AYQBtAHAAcgBkADAANQAuAHAAcgBvAGQALgBvAHUAdABsAG8AbwBrAC4AYwBvAG0A]

note the above code in [....] can be decoded with

$ mmencode -u
BN7PR05CA0018.namprd05.prod.outlook.com

talking IMAP.... all one line commands below start with a . (dot):

. capability
* CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=XOAUTH2 SASL-IR UIDPLUS MOVE ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+
. OK CAPABILITY completed.


. login yourmail@server.com yourpassword
. OK LOGIN completed.

. status INBOX (messages)
* STATUS INBOX (messages 1385)
. OK STATUS completed.

. select INBOX
* 1385 EXISTS
* 0 RECENT
* FLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)
* OK [PERMANENTFLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)] Permanent flags
* OK [UIDVALIDITY 14] UIDVALIDITY value
* OK [UIDNEXT 339858] The next unique identifier value
. OK [READ-WRITE] SELECT completed.

. fetch 1 rfc822.text
* 1 FETCH (RFC822.TEXT {1154}
... (lots of mmencoded lines deletec) ....
 FLAGS (\Seen))
. OK FETCH completed.

. logout
* BYE Microsoft Exchange Server IMAP4 server signing off.
. OK LOGOUT completed.
read:errno=0

store the above mmencoded lines into a file msg and run:

$ mmencode -u < msg
Try webmail undelete could be an option this is only available for the first 24 hours of deletion from what I can recall
-----Original Message-----
From: ....
Sent: 19 May 2017 13:38
To: Apitz,Matthias ....
Subject: RE: lost my inbox

Hi Matthias, if those mails are not in your Deleted Items, then you need to get in touch with US via SN so Exchange admins can do a recovery of your mailbox.
...

HIH

matthias