CodeTwo incident

Email delivery delays - Microsoft is working on the problem

Notice Resolved View vendor source →

CodeTwo experienced a notice incident on November 5, 2020 affecting Mail flow and Mail flow and 1 more component, lasting 10h 8m. The incident has been resolved; the full update timeline is below.

Started
Nov 05, 2020, 10:34 PM UTC
Resolved
Nov 06, 2020, 08:43 AM UTC
Duration
10h 8m
Detected by Pingoru
Nov 05, 2020, 10:34 PM UTC

Affected components

Mail flowMail flowMail flow

Update timeline

  1. identified Nov 05, 2020, 10:34 PM UTC

    A small percentage of emails sent by a subset of users may experience delays in email delivery due to degraded performance of Microsoft Exchange Online Protection. Details of the incident may be found in SI# EX225938 on the Microsoft 365 Admin Dashboard and on Twitter: https://twitter.com/MSFT365Status/status/1324444676993277957. Email signatures are added normally.

  2. identified Nov 06, 2020, 06:00 AM UTC

    Microsoft engineers have applied a fix to mitigate impact. Details of the incident may be found in SI# EX225938 on the Microsoft 365 Admin Dashboard and on Twitter: https://twitter.com/MSFT365Status/status/1324444676993277957. Email signatures are added normally.

  3. identified Nov 06, 2020, 06:34 AM UTC

    The performance of affected Microsoft Exchange Online Protection servers in UK South geolocation is now improving, we're not seeing any email delivery delays. A small number of emails sent by a subset of users in North Central US and West US geolocations may still be delivered with delays. Details of the incident may be found in SI# EX225938 on the Microsoft 365 Admin Dashboard and on Twitter: https://twitter.com/MSFT365Status/status/1324444676993277957. Email signatures are added normally.

  4. identified Nov 06, 2020, 07:21 AM UTC

    Emails are now delivered without delays in UK South and West US geolocation. A small number of emails sent by a subset of users in North Central US geolocation may still be delivered with delays. Details of the incident may be found in SI# EX225938 on the Microsoft 365 Admin Dashboard and on Twitter: https://twitter.com/MSFT365Status/status/1324444676993277957. Email signatures are added normally.

  5. monitoring Nov 06, 2020, 08:09 AM UTC

    All emails are now delivered without delays. We're monitoring the services actively. Details of the incident may be found in SI# EX225938 on the Microsoft 365 Admin Dashboard and on Twitter: https://twitter.com/MSFT365Status/status/1324444676993277957.

  6. resolved Nov 06, 2020, 08:43 AM UTC

    The incident affecting Exchange Online Protection servers in UK South, North Central US and West US has now been resolved by Microsoft. All emails are delivered without delays. If you need more information why your tenant was affected, please log a service request with Microsoft and provide the following service request ID as a reference: EX225938.