11:21 AM PST: Business Mail – Rejected Email with “Deferred” Error
Email sent to some Yahoo! Business Mail users may be rejected by the system with an error message in this form:
421 4.7.0 [TS01] Messages from <x.x.x.x> temporarily deferred due to user complaints – <x.x.x.x> ; see http://postmaster.yahoo.com/421-ts01.html
We are investigating what may cause this message to be generated and will resolve the issue in a timely manner.
08:11 AM PST
(2/26/09) This issue has been resolved.