On 3/7/2013 6:51 PM, Max Pyziur wrote: > > We received the following while sending out a newsletter/notification to > a 6,000+ email list: > > <<< 451 4.3.0 try again. ac8si27848234obc.211 - gsmtp > Deferred: 451-4.3.0 Multiple destination domains per transaction is > unsupported. Please ... while talking to aspmx.l.google.com > > This reads like a configuration issue on the those businesses and > educational institutions who rely on Google mail servers.
It's hard to say, but it seems that you have list members in multiple domains all served by the same google mail MX, and google doesn't like receiving multiple recipient domains in a single SMTP transaction. > Is there a way for the sender (us) to be whitelisted, or is this matter > handled at the receivers' end? I don't know about whitelisting, but if you set SMTP_MAX_RCPTS = 1 in mm_cfg.py you will avoid the issue by never sending to more than one recipient in a single SMTP transaction. And if you do that, you might as well VERP everything by putting VERP_CONFIRMATIONS = Yes VERP_PASSWORD_REMINDERS = Yes VERP_PERSONALIZED_DELIVERIES = Yes VERP_DELIVERY_INTERVAL = 1 in mm_cfg.py as there will be no additional penalty for doing so. -- 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 http://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: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org
