upper case vs lower case RETR

[asnark]

Hi -

I've been having issues with eMail Bounce Handler stalling after trying to retrieve a message. This happens in imap or pop3. It doesn't have anything to do with attachments. My company uses exchange 2010/2013.

I've noticed that if I manually make a connection with in a terminal window and if I use RETR vs retr, the server will respond with RENEGOTIATING. If I use retr, the server will respond with the message requested.

Here is an example of what happens if I use RETR in all caps.

"
openssl s_client -crlf -connect ourserver.com:110 -starttls pop3
....
+OK The Microsoft Exchange POP3 service is ready.
USER username
+OK
PASS password
+OK User successfully logged on.
STAT
+OK 7283 67334920
LIST 1
+OK 1 9742
LIST 2
+OK 2 9819
LIST 3
+OK 3 9341
RETR 2
RENEGOTIATING
"


Question being - does anyone know why this happens in Exchange?

Second question (to maxprog): Can you add a setting in eMail Bounce Handler to use lower case pop3 commands?

Thanks.

 

[stanbusk]

That's weird, I have never heard of such problem. Have you contacted the server support about that? I would really like to read their response.