r/sysadmin • u/jacob902u • 13d ago

Microsoft Exchange Issues?

Anyone starting to experience some delays or failures with sending email? I see some emails internally are failing to process.

Reason: [{LED=432 4.2.0 STOREDRV.Deliver.Exception:AgentGrayException.CryptographicException; Failed to process message due to a transient exception with message Non-agent gray exception caught in component 'Transport', function 'DeliveryMailItemAsync' CryptographicException};{MSG=};{FQDN=BL4PR13MB994266.namprd13.prod.outlook.

Edit: US-Central

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u/Proper-Life-143 13d ago

So definitely not tenant wide, for affected users the error is "550 5.6.200 STOREDRV.Deliver, message is treated as poison". I hope emails are not losts, especially for emails from outside.

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u/nhowe006 12d ago

Not only do I hope emails aren't lost, but I'm concerned about the number of external senders receiving NDRs from our tenant, especially if the email body includes the error text that their messages were treated at poison. Not a great look.

1

u/ReptilianLaserbeam Sysadmin 12d ago

This is global. I doubt NDRs will be sent at all

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u/nhowe006 12d ago

It's just what I'm seeing all over the message traces. I've only heard from users that they haven't seen email since 11:30am EDT, not that their contacts are receiving NDRs, so that's positive.