Nelnet International - SMTP2GO Email Sending Issues – Incident details

The incident is now resolved. Our sending IP was unexpectedly blacklisted, which resulted in some outbound emails not being sent. The root cause of the blacklisting is still under investigation.

Due to the nature of the issue, it is difficult to pinpoint the exact start time. However, from what we can ascertain, emails were failing to send consistently - or being delivered intermittently - between ~8:30am and ~12:30pm AEST.

To ensure successful delivery, any emails sent during this period should now be resent.