Exchange 2013 bounce incoming email after certificate renewal RRS feed

Question

Hi everyone.

First of all, I'm not skilled with Exchange, I inherited from the previous technician.

Recently I renewed my domain certificate with Let'sEncrypt. I did it the same way as always:

1) renew from Let's Encrypts app.

2) go to IIS, remove the 443 binding from Exchange Back End.

3) Restart IIS.

But this time the server doesn't receive mail. When I do a test with gmail it get's through, but I get complaints from my boss that he doesn't receive specific mail. I've added thoses emails to the whitelist but it doesn't seems to work.

When I do a "Get-MessageTracking Log", I got a huge ammount of Fail SMTP emails, but I don't know how to continue.

Thank you for your time.

Answer 1

Hi @Drageir Armanre

According to your information above, your organization failed receiving messages after renewing certificate. Did you get any error information when access outlook or OWA or ECP after that?

Could you please provide the complete message tracking log you received for troubleshooting?(note to erase personal information)

We could firstly use the ExRCA Tool to help us check the Inbound SMTP Email for our organization

In addition, please also check the configuration of the certificates with command below (note to erase personal information):

Get-ExchangeCertificate -Thumbprint XXXXXXXX | Format-List  

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