Issues delivering mail from GMX to my postfix

[Viktor Dukhovni]

On Thu, May 19, 2016 at 05:02:59PM +0200, Carsten Strotmann (sys4) wrote:

> > posttls-finger: Verified TLS connection established to
> > smtp2.strotmann.de[5.45.109.212]:25: TLSv1.2 with cipher
> > ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
> > posttls-finger: > EHLO mx3.grsi.com
> > posttls-finger: < 500 5.5.1 Command unrecognized
> > posttls-finger: EHLO rejected: 500 5.5.1 Command unrecognized
> > posttls-finger: > QUIT
> > 
> > I am not sure what is talking here, but it's not postfix and it's not
> > allowing the ehlo to be processed.
> > 
> 
> This is OpenBSDs "spamd" intercepting. I need to check why it is
> intercepting here, and not transparent piping towards the Postfix.
> 
> Thanks for the pointers, I will check that.

I was going to guess that spamd or similar is the most likely
culprit, even before you said you're running it.

    https://dane.sys4.de/common_mistakes#8

It might be enabling TLS only for cached "known good" clients, but
that is not compatible with DANE.

-- 
	Viktor.