Spam Resource: Microsoft: 451 4.7.500 Server busy delays on Wednesday 10/11

Al Iverson just issued a brilliant blogpost on Spam Resource:

Today, Wednesday, October 11th, many senders are reporting trouble (specifically, delayed mail) when attempting to send email to Microsoft-hosted subscribers. Here’s more on the issue from Steve Atkins from Word to the Wise. I’m keeping a close eye on my Office365 admin dashboard to watch for updates on this issue. Microsoft has logged this as “incident EX680695” and those with O365 admin access can go to Home -> Health -> Exchange Online -> Health to see the current status and click on the incident/advisories there to find the latest details. Here’s a direct link to that incident information, which likely only works if you have appropriate access.Many (but not all) senders were impacted, seeing “451 4.7.500 Server busy” delivery delays when sending to email domains hosted by Office 365 / Exchange Online. Many of the senders reporting trouble were located in the EU; suggesting that the issue may be EU-specific, or specific

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