troubleshooting Question

Outlook 2016/365 & wrong certificates

Avatar of it_medcomp
it_medcompFlag for United States Minor Outlying Islands asked on
13 Comments1 Solution104 ViewsLast Modified:
I have Outlook 2016/365, and we just started having this problem- Our DNS was compromised and I had to rebuild the zones from scratch. I get email, and everything seems to work... except something is still looking in the wrong place, and I don't know what. We get a nuisance pop-up when starting Outlook about a cPanel certificate - the CA is valid, the certificate is expired, and the certificate contains a valid name. This certificate is not on our Exchange servers- I have verified that the only certificates not self-signed (We are using on-prem Exchange 2013) on our Exchange servers are GoDaddy certificates. Our mail and MX records point to our public IP, and I have been using mxToolbox to verify those plus other DNS records. The autodiscover record has been a CNAME pointed to our domain's mail record, and I recently changed it to an A record pointing at this IP address. No change. I also have the SRV pointed to the mail record on the domain using port 443. The certificate message appears right when I start Outlook- Any idea which record is wrong? Any idea how to troubleshoot?
Steve Knight
IT Consultancy

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 1 Answer and 13 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 13 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros