Mail Forward Failure

Mail Forward Failure

Within the past 2 weeks the number of these errors I've been receiving for my Zoho->Gmail forwarding has increased exponentially:

  2. The following message could not be forwarded to GmailEmail@gmail.com for ZohoEmail@mydomain.com

  4. Technical details of the failure:
  5. 5.7.1 [136.143.188.71 12] Our system has detected that this message is
  6.             5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
  7.             5.7.1 this message has been blocked. Please visit
  8.             5.7.1 https://support.google.com/mail/?p=UnsolicitedMessageError
  9.             5.7.1 for more information. e27si4420062pge.40 - gsmtp

  11. Please note that your email forwarding will be disabled if there are too many failures.


  14. Reporting-MTA: dns; mx.zohomail.com
  15. Arrival-Date: Wed, 16 Feb 2022 02:11:17 +0000

  17. Original-Recipient: rfc822; ZohoEmail@mydomain.com
  18. Final-Recipient: rfc822; GmailEmail@gmail.com
  19. Status: 550
  20. Action: failed
  21. Last-Attempt-Date: 16 Feb 2022 02:11:31 GMT
  22. Diagnostic-Code: 5.7.1 [136.143.188.71 12] Our system has detected that this message is
  23.             5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
  24.             5.7.1 this message has been blocked. Please visit
  25.             5.7.1 https://support.google.com/mail/?p=UnsolicitedMessageError
  26.             5.7.1 for more information. e27si4420062pge.40 - gsmtp


  29. Return-Path:<SenderEmail@domain.com>
  30. Received:from mx0a-0015eb01.pphosted.com (mx0a-0015eb01.pphosted.com [205.220.164.44]) by mx.zohomail.com
  31.     with SMTPS id 1644977484370820.0984051220095; Tue, 15 Feb 2022 18:11:24 -0800 (PST)
  32. Message-ID:<BL3PR07MB8955ABB07DEB45B1E87E712BB7359@BL3PR07MB8955.namprd07.prod.outlook.com>
  33. Date:Wed, 16 Feb 2022 02:11:17 +0000
  34. From:"Ricci, Aaron" <SenderEmail@domain.com>
  35. To:"ZohoEmail@mydomain.com" <ZohoEmail@mydomain.com>
  36. Subject:test
  37. Content-Type:multipart/alternative;
  38.     boundary="_000_BL3PR07MB8955ABB07DEB45B1E87E712BB7359BL3PR07MB8955namp_"