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Twitter- Server operating system version
- Ubuntu 18.04
- Plesk version and microupdate number
- 18.0.44
Hello, since few days our messages couldn't reach gmail recipients. In logs of our server (46.242.131.45) I found:
"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 [1 [1]]
to 421 4.7.28 review our
Bulk Email Senders Guidelines."
https://mxtoolbox.com/ and other such tools don't see any problem. I've read a few similar topics but neither of the solutions works for us. I wrote an email to Google but it's hard to get an answer for them. Does anyone has this problem lately, is there a solution?
"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 [1 [1]]
to 421 4.7.28 review our
Bulk Email Senders Guidelines."
https://mxtoolbox.com/ and other such tools don't see any problem. I've read a few similar topics but neither of the solutions works for us. I wrote an email to Google but it's hard to get an answer for them. Does anyone has this problem lately, is there a solution?
