Error 421

  • updated
  • Answered

Several people on our team are getting this message:

The message identifier is: 1ppcex-0001po-QW
The subject of the message is: RE: M22M-812
The date of the message is: Thu, 20 Apr 2023 17:31:43 -0500

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

[email protected]
host []
Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<[email protected]> SIZE=88523:
421 4.7.0 [TSS04] Messages from temporarily deferred due to unexpected volume or user complaints -; see

Can anyone explain this to me and what I need to do to fix it?

Joseph W Webmaster
  • Answered

Thank you for contacting us and I am sorry to hear about the issue sending your mail, I know how frustrating it can be when something doesn't work as expected.

There are a number of possible causes for this issue and the best way to get things working properly is to contact our support team directly by either:

Contacting Support with either of those methods will allow our team to get information specific to your account and figure out what the problem might be.

Please let us know if you ever have any other questions for us!