23 Jun
2020
23 Jun
'20
6:42 p.m.
Am 23.06.2020 um 17:38 schrieb Dshah:
I disabled postscreen and enabled logging, I have all ports working except 993, in log when I try to connect on port 993
dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=10.244.0.24, lip=10.244.0.108, TLS handshaking: SSL_accept() failed: error:1408F10B:SSL routines:ssl3_get_record:wrong version number, session=<rEH6ocGoOtUK9AAY>
I found that I could disable ssl3 by "ssl_protocols = !SSLv2 !SSLv3" but this option is not working (dovecot 2.3.10.1 (a3d0e1171)
Likely you have configured your mail client to issue a STARTTLS connection rather than a SSL one (implicit versue explicit SSL).
Port 143 -> STARTTLS Port 993 -> SSL / TLS
Alexander