On Wed, Jun 19, 2019 at 09:28:52PM +0200, sral...@gmail.com wrote: > Verified TLS connection established to MXhost[xxx.xxx.xxx.xxx]:25: TLSv1.1 > with cipher ECDHE-RSA-AES256-SHA (256/256 bits)
Postfix: I can verify the certificate of the remote host > postfix/smtp[]: : to=<em...@domain.com>, relay=MXhost[xxx.xxx.xxx.xxx]:25, > delay=2190, delays=2186/0.03/3.9/0.13, dsn=4.7.0, status=deferred (host > MXdomain[xxx.xxx.xxx.xxx] said: 403 4.7.0 not authenticated (in reply to > MAIL FROM command)) Postfix: The remove host does not like what I send. This two things have nothing to do with each other. You obviously lack authentication, not remote verification. Please describe your problem, not your solution. > relay_domains = <subdomain> Syntax error. > smtp_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, TLSv1.1 Don't. > smtp_tls_protocols = !SSLv2,!SSLv3, !TLSv1, !TLSv1.1 What? Bastian -- Conquest is easy. Control is not. -- Kirk, "Mirror, Mirror", stardate unknown