Microsoft has released security updates (SUs) that resolve vulnerabilities found in:
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019
IMPORTANT: When manually installing SUs...
Updated Mar 16, 2022
Version 6.0
Blog Post
notrace "We installed the latest SU wednesday evening. Have a cert expires 8th of april and problems started today."
What kind of certificate do you have? Is it one of the certificates Exchange did create on setup, or a certificate of your mail-domain?
We are using a wildcard certificate for our mail-domain and it is about to expire on April 6th. We already had log entries about cert warning to expire BEFORE the SU installation on tuesday. Server is still running w/o issues. So I am trying to figure out what kind of certificate is triggering this issue. So I want to know if it is one of the certificates created during installtion of exchange.
Just about to get a new wildcard, but I am not sure if I should try to change our wildcard with the new one. I want to avoid triggering a crash during cert.-change. Don't know what would be best for our server at the moment...