On Sun, Sep 27, 2020 at 11:31:43AM -0700, PGNet Dev wrote:
> i've postfix + dovecot running on the same box; delivery between them
> is via lmtp.
The main thing that stands to me is the timeout connecing to the
Dovecot submission port.
> ( this is a reproducible, exactly 30-second delay ... )
>
> ==> /var/log/dovecot/dovecot.log <==
> 2020-09-27 10:15:49
> lmtp(us...@example1.net)<uHZDHy/IcF8APAAA+IOfAw>: Error: smtp-client: conn
> internal.mx.example.com:60465 (10.0.1.17:60465) [1]:
> connect(internal.mx.example.com:60465) failed: Connection timed out after 30
> seconds
------------------ PROBLEM LIKELY HERE --->
> 2020-09-27 10:15:49
> lmtp(us...@example1.net)<uHZDHy/IcF8APAAA+IOfAw>: Error: sieve:
> msgid=<4bzsg33hvqzw...@mx.example.com>: redirect action: failed to redirect
> message to <us...@example2.net>: smtp(internal.mx.example.com:60465): RCPT TO
> failed: Connect timed out (temporary failure)
------------------ <---
Since both the server and the client here are Dovecot, you might have
better luck on the Dovecot list. However, ...
> 2020-09-27 10:15:49 submission-login: Debug: SSL error:
> SSL_accept() failed: error:1408F10B:SSL routines:ssl3_get_record:wrong
> version number
The above again looks like cleartext (e.g. "QUIT<CRLF>") sent to a port that
expects TLS.
> ==> /var/log/dovecot/dovecot-debug.log <==
> 2020-09-27 10:15:49 submission-login: Debug: SSL error:
> SSL_accept() syscall failed: Invalid argument
And the above may be the reason why connections are timing out...
--
Viktor.
