[FAQ] Exchange Certificates Expires – Microsoft Partners Forum:
[FAQ] Exchange Certificates Expires
Two self-issued certificates expired: Sites certificate and remote.xyz.com certificate
For remote.xyz.com certificate, we can use “Set up your Internet Address” wizard(IAMW) to recreate self-issued certificate on SBS.
1. Open the Windows SBS Console.
2. On the navigation bar, click Home.
3. In Getting Started, click Set up your Internet Address. The Internet Address Management Wizard appears.
4. Follow the instructions in the wizard to do following:
o Choose I already have a domain name that I want to use.
o Choose I want to manager the domain name myself.
o Type in the domain name and the extension.
For Sites certificate, you can try to use the guide below to generate a certificate for the Sites again.
Quick Fix: SBS 2008 ‘Sites’ Self Signed Certificate Expired
In addition, we can delete the expired certificate which will not cause any problems.
Microsoft Partner Support Community