Hello,
the last discussion about PRDR
http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt on ietf-smtp@??? was in
March 2014.
https://www.ietf.org/mail-archive/web/ietf-smtp/current/msg07655.html
The question was if PRDR will make any progress. One of the answers was that nobody uses it, despite being implemented
in exim:
https://www.ietf.org/mail-archive/web/ietf-smtp/current/msg07658.html
To make progress with PRDR please switch the default for enable_prdr to True. As exim is the only software that
implements this, only the compatibility exim ⇔ exim has to be tested and this has been done.
Thanks in advance
Дилян