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It could be the healthy mailbox address issue, it’s recommended to post out the undeliverable message content and message header out.
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The subject changed to "Undeliverable:", "Inbound proxy probe" was gone. It still send the email but have something change:Ģ.
#How to resend failed email gfi mailessentials how to#
I'd follow the instructions of how to overwrite OnPremisesInboundProxy. I found there are many "Undeliverable: Inbound proxy probe" because the SOPHOS email gateway has many successful email send record. I can't do the comparison of the NDR message, because none of the internal mailbox receive it. If you have feedback for TechNet Subscriber Support, Jason, If you have feedback for TechNet Subscriber Support, you mentioned above you need recreate the healthy mailboxes firstly, after that please check if the primary address of the healthy mailboxes is same with the original recipient of the NDR messages sent they are different, we need to change the primary address of the healthy mailboxes.(create a new domain accordingly and change the primary address of the healthy mailboxes) Mark the replies as answers if they help. We could also find how to overwrite OnPremisesInboundProxy here: You could also follow the way to hide the alert by overriding the monitor using the command below:Īdd-GlobalMonitoringOverride -Identity " FrontendTransport\OnPremisesSmtpClientSubmissionMonitor" -PropertyName Enabled -PropertyValue 0 -ItemType Monitor -ApplyVersion "version"
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As you mentioned above you need recreate the healthy mailboxes firstly, after that please check if the primary address of the healthy mailboxes is same with the original recipient of the NDR messages sent they are different, we need to change the primary address of the healthy mailboxes.(create a new domain accordingly and change the primary address of the healthy mailboxes)