Stefan Bauer:
> Hi,
>
> i noticed the following today. Is this part of the standard?
There is no standard that requires TLS for MTA-to-MTA deliveries.
> For recipient domain:
>
> MX 5 mx1.recipient.com - does not support TLS and refused delivery with
> temp error
> MX 10 mx2.recipient.com - does support TLS and took the mail
>
> Sep 18 10:36:29 B245080E75: TLS is required, but was not offered by host
> mx1.recipient.com[1.2.3.4]
> Sep 18 10:36:29 Untrusted TLS connection established to
> mx2.recipient.com[5.4.3.2]:25:
> TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
>
> smtp_delivery_status_filter was in place for above temp error, but it was
> not mapped to permanent error (which makes sense to me.
What is the problem?
Wietse
