On Tue, Feb 5, 2019 at 1:07 AM Richard Johnson <r...@mischievous.us> wrote:
> I run a small mailman server for our historical recreation group. Lately, > I've been seeing messages like: > > <email@hostname>: host al-ip4-mx-vip1.prodigy.net[144.160.235.143] said: > 550 5.7.1 Connections not accepted from servers without a valid sender > domain.alph733 Fix reverse DNS for 149.28.67.38 (in reply to MAIL FROM > command) > host 149.28.67.38 38.67.28.149.in-addr.arpa domain name pointer peacock.place. > host peacock.place peacock.place has address 149.28.67.38 The DNS records look perfect to me. If you're going through a time warp to Prodigy maybe the new top-levels like .place don't work yet? You get the error after MAIL FROM because that's the earliest point when a server is allowed to 550. The thing that puzzles me is that "domain.alph733" in there. I don't know what that is. If you're sending that in the HELO / EHLO then that is an error. Joe Brennan Columbia University ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
