On 4 Sep 2019, at 21:35, Jean-Daniel <jddupas@xooloo.com> wrote:

Just a wild guess as I didn’t try to configure Mail on Catalina yet, but it looks like your server only supports ‘DHE-RSA…’ ciphers.
I think that modern systems prefers using ECDHE key exchange and would not be surprise if iOS requires it.

What version of OpenSSL are you using ?

A good guss, I am using 1.0.2r, but it is missing ECDHE so that seems like the problem. I will try with a openssl that supports it.

Thank you!

Regards
Henrik