Mimecast Delays

Incident Report for SMTP2GO

Resolved

We have put measures in place to work around Mimecast's issue.

Posted Sep 03, 2020 - 21:27 UTC

Monitoring

A fix has been implemented and we are monitoring the results.

Posted Sep 03, 2020 - 21:00 UTC

Investigating

We are seeing some delays with emails sent to Mimecast users. It appears Mimecast is sometimes incorrectly producing the error "451 Open relay not allowed".

https://community.mimecast.com/docs/DOC-1369#451

We are investigating the issue urgently. However, we would also recommend that recipients contact Mimecast to report the issue as well.

Thank you.

Posted Sep 03, 2020 - 16:50 UTC

This incident affected: Email sending (SMTP service).