Validating Hybrid Outbound Connetcor Issue

Abdul Ali
Abdul Ali used Ask the Experts™
Im stuck in validating the hybrid outbound connector in office 365, it always falied for the TLS part and i get that message which is related to the certificate

Couldnt validate the recipient's email server certificate. The certificate subject name doesn't match the domain you specified.

I already checked the subject name and it's correct, also follow the below Microsoft article

 but still the issue persist, and not sure where to check? so any help in that.

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The issue has been solved, after checking the TLS connection using site and it was related to the Fortimail Firewall the connection was always hitting the self signed cert of the appliance except the exchange one after bypassing that self cert from the firewall it works fine.
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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Abdul Ali (https:#a42047721)

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