2009-06-19 15:28:49 [49036] 1MHf2o-000Cj1-J7 SMTP error from remote mail server after initial connection: host mx2.mail.eu.yahoo.com [77.238.177.142]: 421 4.7.1 [TS03] All messages from 94.76.221.176 will be permanently deferred; Retrying will NOT succeed. See
http://postmaster.yahoo.com/421-ts03.html
2009-06-19 15:28:49 [49036] 1MHf2o-000Cj1-J7 SMTP error from remote mail server after initial connection: host mx1.mail.eu.yahoo.com [217.12.11.64]: 421 4.7.1 [TS03] All messages from 94.76.221.176 will be permanently deferred; Retrying will NOT succeed. See
http://postmaster.yahoo.com/421-ts03.html
This has just started this afternoon. I have been through the logs and cant see any real reason for it. Our volume of email has increased slightly over the last month but still very small. In the last 10 days about 500 email sent to yahoo.
I have filled out there form and now awaiting a response.
Think of setting up dkim to see if it helps comply with them more. As far as I see things are in order other wise.
Not sure what else to do about it at the moment
Any info welcome
Thanks
Terry