Comments on: How Exchange Uses SSL Certificates https://practical365.com/how-exchange-uses-ssl-certificates/ Practical Office 365 News, Tips, and Tutorials Thu, 11 Jul 2024 19:11:48 +0000 hourly 1 https://wordpress.org/?v=6.6.1 By: Jaap Wesselius https://practical365.com/how-exchange-uses-ssl-certificates/#comment-287402 Tue, 13 Feb 2024 14:01:46 +0000 https://practical365.com/?p=60406#comment-287402 In reply to Admin101.

Thanks for your kind words.
Can you check with checktls.com if your server presents the right certificate?
Is your hoster expecting a certain certificate maybe?

Thanks,
Jaap

]]> By: Admin101 https://practical365.com/how-exchange-uses-ssl-certificates/#comment-287365 Mon, 12 Feb 2024 21:34:40 +0000 https://practical365.com/?p=60406#comment-287365 Hello Japp,
A great article as always. You mentioned the scenarios where the certificate must be valid (hybrid, domain security or forced TLS). We use none of those but experienced an issue where due to a cert our 2016 Exchange servers stopped relaying e-mails to our 3rd party hosted service (smarthost). A week before the 3rd party cert expiration date we installed and configured the replacement cert and left the old one on the server. We thought the old cert wasn’t being used, but when it expired the servers stopped relaying e-mail. Are there other conditions you didn’t mention where the cert is required to be valid?
Thank you.

]]> By: bueschu https://practical365.com/how-exchange-uses-ssl-certificates/#comment-287083 Wed, 07 Feb 2024 06:20:26 +0000 https://practical365.com/?p=60406#comment-287083 Great – many thanks

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