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John2222's avatar

email forwarding rejected: 550 message rejected ... AUP#CXSNDR

550 <> message rejected. Refer to Error Codes section at for more information. AUP#CXSNDR

On several emails I have tried to forward I have gotten the above reject message (Outlook 365, Windows 95).  Similar reject from iPad.

On one of the emails I found a link in the body of the email referring to http://click1.info2.xxxx ... for more information.  I am guessing that Cox thinks that "click1" link is spam because when I manually removed it, the email forwarded without any errors.

Did something change with Cox spam filtering?  Is there a solution to this?

3 Replies

  • P.S. Note, same reject message occurs when I tried forwarding email using online.

  • Bruce's avatar
    Honored Contributor III

    550 = Non-Existent Email Address

    • John2222's avatar

      Strange because the is MY email address and been the same for years.  Any other ideas?