Greg Sims:
> > A more targeted approach is to use smtp_delivery_status_filter with
> > a regexp that targets that exact error message, and that changes a
> > 'hard' reject into a soft one.
>
> > For inspiration to turn hard into soft rejects, see examples at
> > http://www.postfixlorg/postconf.5.h
> A more targeted approach is to use smtp_delivery_status_filter with
> a regexp that targets that exact error message, and that changes a
> 'hard' reject into a soft one.
> For inspiration to turn hard into soft rejects, see examples at
> http://www.postfixlorg/postconf.5.html#default_delivery_st
Wietse Venema:
> The exact message, incluing the name 'alph765' of the cluster with
> broken reverse DNS:
> https://forums.att.com/conversations/att-internet-email-security/prodigynet-reverse-dns-lookup-is-broken/5f07b53ac17a063d9bfecdb8
>
> It affects multiple domains hosted at AT&T:
> https://co
Greg Sims:
> We divided our outbound email into two streams: transactional and
> bulk. Each of the streams uses different ip addresses. One ip for
> transactional email and a randmap group of four ips for bulk email.
> The transactional email is sent from domain @raystedman.org. The bulk
> email
