Eudora, Dovecot, 20.04 LTS

[david]

Folks

I have installed Ubuntu 20.04.1 LTS with Postfix and Dovecot to 
replace a server that was running Centos.  I also use Eudora 7 on my 
Windows desktop as a mail client (yes, I know it's old, but it's 
still the best).  Eudora works in centos 7 and 8, but does not work 
in Unbutu (using TLS, Alternate Port).  The server log complains:



==> mail.log <==
Jan  6 09:15:04 beid dovecot: pop3-login: Disconnected (no auth 
attempts in 0 secs): user=<>, rip=45.27.31.63, lip=168.103.47.84, TLS 
handshaking: SSL_accept() failed: error:14209102:SSL 
routines:tls_early_post_process_client_hello:unsupported protocol, 
session=<Jlo+oD245A8tGx8/>


Eudora claims to be using
  DHE-RSA-AES256-SHA TLSv1
and from what I can tell, that is supported in OpenSSL 1.1.1f.

I'm not sure where to look to figure out what to do.  Any advice 
would be appreciated.  Please, let's not have a discussion of "you 
should be using mail client xxxx".

David