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sailor1942's avatar
New Contributor

Emails Getting Returned

I have been using gmail for quite a while because ssome technical issues I had sending mail from my cox account.  All of a sudden I started getting any emails addressed to people having *** addresses are being returned with the following message:

Reporting-MTA: dns;
Received-From-MTA: dns;
Arrival-Date: Mon, 30 Jan 2017 09:31:09 -0800 (PST)
X-Original-Message-ID: <>

Final-Recipient: rfc822;
Action: delayed
Status: 4.1.0
Remote-MTA: dns; (, the server for the domain
Diagnostic-Code: smtp; 452 4.1.0 Message threshold exceeded
Last-Attempt-Date: Wed, 01 Feb 2017 14:01:54 -0800 (PST)
Will-Retry-Until: Thu, 02 Feb 2017 09:31:09 -0800 (PST)
Can anyone tell me what is happening?  Any help would be appreciated.

3 Replies

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  • Did you ever figure out what was going on?  The same thing happened to me today.

  • CarolLM's avatar
    Former Moderator

    Once Gmail takes steps to correct their servers problems with sending us too many spam emails the block will be removed.  Are you sending these messages in a group or are they individual emails to the Cox customer?

  • DerrickW's avatar
    Valued Contributor

    Can you provide us with email headers as well? We can investigate this further for you.