Exchange server is sending NDR's to inboundproxy@contoso.com so I was troubleshooting this issue and found out that probe definition is using wrong domain name to send probe e-mails to health mailboxes.

<ExtensionAttributes><WorkContext><SmtpServer>127.0.0.1</SmtpServer><Port>25</Port><HeloD
                              omain>InboundProxyProbe</HeloDomain><MailFrom Username="inboundproxy@contoso.com"
                              /><MailTo Select="All"
                              Username="HealthMailboxXXXXXXXXXX@something.something.com" /><Data
                              AddAttributions="false">X-Exchange-Probe-Drop-Message:FrontEnd-CAT-250
                              Subject:Inbound proxy probe</Data><ExpectedConnectionLostPoint>None</ExpectedConnectionLo
                              stPoint></WorkContext></ExtensionAttributes>

So in my case extension attribute uses wrong recipient/username Username="HealthMailboxXXXXXXXXXX@something.something.com"

This had to do with some domain changes we had in the past.
So I could create global override but as we have like 10 mailboxes I would have to create global override 10 times.
I could also add additional smtp address for every health mailbox but I do not want to do that as maybe I will have to recreate those mailboxes again.

Name                                                            ItemType
----                                                            --------
OnPremisesInboundProxy_10                                          Probe
OnPremisesInboundProxy_9                                           Probe
OnPremisesInboundProxy_8                                           Probe
OnPremisesInboundProxy_7                                           Probe
OnPremisesInboundProxy_6                                           Probe
OnPremisesInboundProxy_5                                           Probe
OnPremisesInboundProxy_4                                           Probe
OnPremisesInboundProxy_3                                           Probe
OnPremisesInboundProxy_2                                           Probe
OnPremisesInboundProxy                                             Probe

Is there a way to recreate the probe definitions as I am hoping that after re-creation of the probes the correct e-mail with correct domain would be generated?

If possible, how to do that?

• Edited by D. Omerovi Friday, June 26, 2015 9:49 AM