On Tue, Nov 26, 2013 at 05:53:05PM -0500, Wietse Venema wrote:
> Buried under useless verbose logging is a clear warning:
>
> > warning: TLS library problem: 16575:error:1408F10B:SSL
> > routines:SSL3_GET_RECORD:wrong version number:s3_pkt.c:337: smtp_get:
>
> This means that the TLS library had a problem.
Plus the server is an Microsoft Exchange server, and the problem
happens on the first command after the post STARTLS EHLO.
> > I've also included the successful telnet test:
>
> telnet is not valid, since you are using TLS.
>
> To debug SMTP over TLS, use "openssl s_client".
No need. This is the problem with Exchange on Windows 2003, and
the broken DES-CBC3-SHA ciphersuite. Work-around in the list
archives.
--
Viktor.
