(They have a high incentive because work is on a first-come-first serve basis.
It´s tricker with clients to try and explain why our e-mails are delayed by many hours and are ending up in their junk mail folder.
I too noticed that a few recently asked questions cached in google are now deleted on yahoo´s system. Mark, Domain Keys seemed to increase the "chances" of going through.
There appears to have been an incident involving capacity issues within our delivery infrastructure.The error message "451 Message temporarily deferred - 4.16.50" indicates that our MTAs are currently experiencing heavy, unusual traffic.These deprioritizations were temporary but may be re-triggered if the sending IP profile continues to be poor.Typically, deprioritizations are triggered by bad individual sender or MAIL FROM profiles. you are not the administrator for the mail server(s) affected, we encourage you to contact the administrator so they can address the possible issues regarding mailings from the mail server.
If you notice any further difficulties with delivering to Yahoo!
The following link contains information on maintaining prioritized delivery when sending to Yahoo! also refer to the Help page below for more information on our recommended best practices for bulk mailers.
At the bottom of the Help page is a link to a feedback form where you can contact our Customer Care team to apply for possible whitelisting.
I originally thought Yahoo was having DNS issues or disappearing server problems again.
Yesterday and today none of my users email is getting through to Yahoo.
Would Domain Keys actually help since the servers are rejecting upon connect?