[Gamefreak] Warning: message 1ofjTe-0000BR-Ob delayed 24 hours

[Mail Delivery System]

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 imvuerotica.freednsdedi.com.

The message identifier is:     1ofjTe-0000BR-Ob
The subject of the message is: FedEx: Not possible to make delivery
The date of the message is:    Tue, 4 Oct 2022 11:04:58 +0000

The address to which the message has not yet been delivered is:

  puppo_achee at yahoo.co.uk
    host mx-eu.mail.am0.yahoodns.net [188.125.72.73]
    Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<gamefreak at polarhome.com> SIZE=3423:
    421 4.7.0 [TSS04] Messages from 185.233.186.16 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.
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