I have now had 2 separate messages get rejected by google in the last week or so. First message was an email I sent to a company inquiring about service. The second message was in reply to a message that I received from a client. I know that google made some changes to their products, and wasn’t sure if others are seeing this behavior as well. The server is only used by my wife and I, so we are not generating tons of messages to gmail addresses…
In the MIAB admin panel the only red X that I have is for “MTA-STS policy is missing: STSFetchResult.NONE”. Not sure if that would be causing me issues.
I had setup verification using google’s postmaster tools, and still show as verified at the portal https://postmaster.google.com/u/0/managedomains?pli=1
Any thoughts would be appreciated.
ERROR BELOW:
This is the mail system at host tishmail.com.
####################################################################
THIS IS A WARNING ONLY. YOU DO NOT NEED TO RESEND YOUR MESSAGE.
####################################################################
Your message could not be delivered for more than 3 hour(s).
It will be retried until it is 2 day(s) old.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<(recipient email address)>: host
alt1.gmail-smtp-in.l.google.com[108.177.12.27] said: 421-4.7.28
[(My MAIB IP Address) 15] Our system has detected an unusual rate of
421-4.7.28 unsolicited mail originating from your IP address. To protect
our 421-4.7.28 users from spam, mail sent from your IP address has been
temporarily 421-4.7.28 rate limited. Please visit 421-4.7.28
Prevent mail to Gmail users from being blocked or sent to spam - Gmail Help to 421 4.7.28
review our Bulk Email Senders Guidelines.
4-20020a1f1104000000b0035e287ffbcfsi1597991vkr.178 - gsmtp (in reply to end
of DATA command)