Upcoming scheduled maintenance for Library Search, Rialto and Alma:
Estimated Start time: Saturday 13th December 2025 22:00 GMT
Estimated End time: Sunday 14th December 2025 00:00 GMT
Past Incidents
18th July 2023
Microsoft O365Some users may be unable to send Exchange Online email
This issue should now be resolved.
From MS: "We’ve identified that a change to the free/busy infrastructure resulted in impact to the Exchange online mail flow infrastructure. We’re identifying a plan to mitigate impact and restore mail flow."
Affected users may receive the following error "503 5.5.1 bad sequence of commands"
