Hi, I appreciate the reply. I was sure I tested every combination - well, I guess I didn't. Change of ports did the trick. I haven't changed the configuration settings.
Thank you!
Best regards,
Marko
-----Original Message-----
From: owner-postfix-us...@postfix.org <owner-postfix-us...@postfix.org> On
Behalf Of Viktor Dukhovni
Sent: Sunday, February 12, 2023 10:34 PM
To: postfix-users@postfix.org
Subject: Re: SSL3 alert write:fatal:decode error
On Sun, Feb 12, 2023 at 09:23:39PM +0000, Marko ANGELSKI wrote:
> This is the output of the tshark - only one line:
>
{"ports":["465","35308"],"len":"7","tls":{"ct":"21","rv":"0x0303","rl":"2","
> ht":null,"hv":null,"sv":null}}
As expected, the only TLS packet is the fatal alert from the server (port
465) to the client (port 353409). The client is not using TLS wrapper mode.
Perhaps the client expects to use SMTP STARTTLS, and should be directed to
port 587 instead.
--
Viktor.
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