Outage in VIPRE Security

Outbound Email Rejections from O365 IPs

Resolved Minor

May 19, 2025 - Started 11 months ago - Lasted about 17 hours
Official incident page

Incident Report

We are currently experiencing an issue where outbound messages sent via our smarthost are being rejected in some cases. The error returned is:

"55X - relay denied"

This appears to affect messages originating from certain Office 365 IP addresses. Our team is investigating and working to resolve the issue.
We will provide updates as we learn more.

Components affected

VIPRE Security VIPRE Email Security

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Latest Updates ( sorted recent to last )

11 months ago - at 05/19/2025 06:57PM

We have implemented a fix for the issue causing "55X - relay denied" errors on outbound messages from certain Office 365 IPs. At this time, the issue appears to be resolved, and we are actively monitoring the situation.

11 months ago - at 05/19/2025 05:29PM

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