From their webpage;
421 Message from (x.x.x.x) temporarily deferred - 4.16.50 Last Updated: December 08, 2009 If youre seeing the error "421 Message from x.x.x.x temporarily deferred - 4.16.50", in your SMTP logs (where x.x.x.x is your IP address), this indicates that emails from your mail server have been generating substantial complaints from Yahoo! Mail users. This is a temporary error and your mail server may automatically re-try sending emails at a later time. However, if youre seeing this error consistently over an extended period of time, we encourage you to provide us with detailed information so that we can help diagnose your problem. For bulk mailers, please visit this page to review our best practice recommendations and request assistance. If your mail server does not primarily send bulk mailings (e.g., you run a personal, corporate, educational, or ISP mail server), please fill out this form instead. If you are not the administrator of the mail server in question, please contact the administrator directly with the error message you are receiving. HTH, Drew
A client is complaining that a user at Xtra is not receiving email they sent. I sent a test email and viewed the MX logs and found the following:
mx1.tnz.mail.yahoo.com[124.108.96.67] refused to talk to me: 421 Message from (DELETED) temporarily deferred - 4.16.50. Please refer to
http://help.yahoo.com/help/us/mail/defer/defer-06.html
This is also appearing on other mail servers with other senders.
Is this something Xtra is doing across the board or is there another explanation?
The web link showing has no information corresponding to the status result.