Am 15.12.2018 um 19:02 schrieb C. Andrews Lavarre:
The openssl command I have tried (that used to work with Dovecot 2.2) is: openssl s_client -connect mail.privustech.com:143 I have also tried openssl s_client -connect mail.privustech.com:143 -servername mail.privustech.com
Please, there is zero need to mail me personlly. Keep your replies to the list. I am following here as you can see.
And to your command: it is wrong. As I guessed you are talking with SSL to the IMAP STARTTLS port. That of course cannot work.
SSL here means directly doing a secure handshaking, just like HTTPS is working. The default port for IMAPS is 993, not 143.
If you test against IMAP/STARTTLS on port 143, then do with
openssl s_client -connect mail.privustech.com:143 -starttls imap
As your "doveconf -n" does not show any special setup regarding IMAPS or IMAP/STARTTLS the case is as analyzed.
Alexander