Keep getting kickbacked emails after sending to Gmail today. It's really annoying and my recipient is not receiving my emails when I reply to his emails. There's nothing suspicious within these emails that I'm aware of that's getting flagged by Google's servers.
I checked my SPF records and it's using the appropriate record ZoHo recommends.
Why is this happening? I masked the recipient's email below. Here's the error message that comes back:
Reporting-MTA: dns; mx.zohomail.com
Arrival-Date: Thu, 29 Oct 2020 11:42:32 -0700
Original-Recipient: rfc822; recipient [at] gmail.com
Final-Recipient: rfc822; recipient [at] gmail.com
Status: 421
Action: failed
Last-Attempt-Date: 29 Oct 2020 19:27:45 GMT
Diagnostic-Code: 4.7.0 [136.143.188.51 15] Our system has detected that this message is
4.7.0 suspicious due to the nature of the content and/or the links within.
4.7.0 To best protect our users from spam, the message has been blocked.
4.7.0 Please visit
4.7.0 https://support.google.com/mail/answer/188131 for more information. wp8si2714516ejb.752 - gsmtp