Re: [exim] TLS unsupported protocol?

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Author: Viktor Dukhovni
Date:  
To: exim-users
Subject: Re: [exim] TLS unsupported protocol?
> On Sep 2, 2019, at 7:01 PM, Mike Tubby via Exim-users <exim-users@???> wrote:
>
> 2019-09-02 23:57:30 CONNECT: New connection from 80.82.32.21:62950 -> 195.171.43.32:25
> 2019-09-02 23:57:30 CONNECT: Accepting connection from: 80.82.32.21 - not blocked by any RBL
> 2019-09-02 23:57:30 HELO: Accepted HELO/EHLO serv13.vsi.ru from remote host: 80.82.32.21 (serv13.vsi.ru)
> 2019-09-02 23:57:30 CRYPTO: Client 80.82.32.21:62950 issued STARTTLS
> 2019-09-02 23:57:30 TLS error on connection from serv13.vsi.ru [80.82.32.21] (SSL_accept): error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol
>
> is this just a case of them using SSLv2 or something I don't have enabled at my end?


It could be an older version of SSL/TLS, or could be anything else at all
(just garbage, not TLS). The only way to know is to capture a PCAP file,
and look at the packets with wireshark or tshark.

-- 
    Viktor.