I'm trying to fetch emails programmatically from Exchange 2003 over POP. As a proof of concept I'm trying to connect using openssl s_client.
I've started the POP service on my Exchange server. Trying to connect using
openssl s_client -connect MYEXCHANGESERVER:995
20303:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:188:
openssl s_client -connect MYEXCHANGESERVER:995 -starttls pop3
[UPDATE] In response to jj33's advice, netcating (originally telneting) onto the server as follows:
nc -v MYEXCHANGESERVER 995
Connection to MYEXCHANGESERVER 995 port [tcp/pop3s] succeeded!
Then the connection automatically closes.
Netcating onto port 110 (insecure pop) returns
+OK Microsoft Exchange Server 2003 POP3 server version 6.5.7638.1 (MYEXCHANGESERVERNAME) ready.
For every command I try I get back
-ERR Protocol error.
Forgive a newb - I'm basically shooting wildly in the dark with no idea on what I'm supposed to be doing. In the past I've read my GMail over openssl s_client, and setting up those certificates was easy and well documented. I would imagine I need to set up some sort of certificate here as well, and I've looked a bit at using a .pfx file. But like I said, I'm completely lost here.
Thankful for any advice,