Gmail Blockng Emails Again
This message was created automatically by mail delivery software.
A message that you sent has not yet been delivered to one or more of its recipients after more than 4 hours on the queue on bosmailout10.eigbox.net.
The message identifier is: 1pf5g8-0007hf-U7
The subject of the message is: RE: Form Submission - Contact Us
The date of the message is: Wed, 22 Mar 2023 16:04:18 -0500
The address to which the message has not yet been delivered is:
host alt4.gmail-smtp-in.l.google.com [22.214.171.124]
Delay reason: SMTP error from remote mail server after end of data:
421-4.7.28 [126.96.36.199 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 https://support.google.com/mail/?p=UnsolicitedRateLimitError to
421 4.7.28 review our Bulk Email Senders Guidelines. k2-20020aa788c2000000b00627f0afab65si11816533pff.150 - gsmtp
No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you.
2 months ago
Sometimes, on shared hosting where many customers use the same email servers, they get detected as contributing to spam and unnecessarily get blacklisted by a few recipient email servers and RBLs. We do have a system in place that monitors our mailout server IPs for their reputation at RBLs that sends out reports periodically. Our Network Operations team rotates the blocked IPs automatically and that should resolve any blocks our servers may have, given time. We do recommend trying to resend the bounced emails.
Additionally, we have already informed our engineering team regarding this issue and our engineers are working towards a fix on increasing the reputation. I'm afraid we do not have an ETA on this. We appreciate your patience while we resolve this issue.