On 03/22/2018 07:10 AM, Jayson Smith wrote: > > <<< 550 #5.1.8 Domain of sender address <xxxxxxx-boun...@xxxxxxx.com> > does not exist > 554 5.0.0 Service unavailable
I would check the following in DNS Does xxxxxxx.com have an A record (not a CNAME)? Does the IP address in that A record have a PTR (rDNS) back to xxxxxxx.com? If you support IPv6, check the same things for the AAAA record. -- Mark Sapiro <m...@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan ------------------------------------------------------ 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
