I'm having an issue with Yahoo and their servers rejecting mails from our network:
"If you are persistently seeing the message "421 4.7.1 [TS03] All messages from x.x.x.x permanently deferred" in your SMTP logs, this indicates that we are seeing a high volume of emails from your server that is indicative of unsolicited mailings. To review our recommended practices for bulk senders, we strongly encourage you to visit:" After contacting Yahoo, our own provider and even changing the range of IPs we were using on one server, the problem persists. I'm not sure exactly what is happening but from what I understand, Yahoo is blocking emails from many mail servers(Confirmed with our own uplink provider) without actual proof that the remote server is actually sending bulk messages. Some users said there is now a form to use so that Yahoo will allow you to send emails to their users. Has anyone else encountered this problem lately? I've check 3 of our mail servers, they do no SPAM. Some of those mail server send on average 60 emails per day and that's across many different servers. Yahoo are being totally useless. All we are getting are automated replies without useful information. Some of it are FAQ about rDNS, SPF and domain keys and I'm wondering if this is a move by Yahoo to force smaller providers to integrate domainkeys in their system. (rDNS and SPF is configured) I'm using Exim and Postfix, depending on the servers. Ideas? Did I miss the boat at some point and everyone are supposed to be using DomainKeys? -- Ravnox _______________________________________________ mlug mailing list [email protected] https://listes.koumbit.net/cgi-bin/mailman/listinfo/mlug-listserv.mlug.ca
