vic1smith@yahoo.com.au
   host mta6.am0.yahoodns.net [67.195.204.79]
   Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<pcharuk@bigpond.net.au> SIZE=4395:
   421 4.7.0 [TSS04] Messages from 203.42.40.145 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes

I have started getting these error messages after successfully talking this email address previously. Not sure what is happening?? Thanks. _______________________________________________________________________________ This message was created automatically by mail delivery software. A message that you sent has not yet been delivered to one or more of its recipients after more than 24 hours on the queue on exhprdomr01. The message identifier is: 1t6OCQ-0002KI-2I The date of the message is: Thu, 31 Oct 2024 16:58:25 +1100 The subject of the message is: Re: The address to which the message has not yet been delivered is: vic1smith@yahoo.com.au host mta6.am0.yahoodns.net [67.195.204.79] Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<pcharuk@bigpond.net.au> SIZE=4395: 421 4.7.0 [TSS04] Messages from 203.42.40.145 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you.