1. step
New-ExchangeCertificate -generaterequest:1 -domainname domain.com,mail.domain.com,smtp.domain.com,pop3.domain.com -privatekeyexportable:1 -path c:cert.txt -force:1
2. step
Import certificate request using web access to your Certification authority – logon as administrator! (WEB SERVER!!!)
3. step
Export certificate to a location on the disk… c:certnew.crt
4. step
Import-ExchangeCertificate -path c:certnew.cer
5. step
Enable-ExchangeCertificate -thumbprint 5ACC9A5D90E2CFDBAD6E25CD02362B8954506810 -Services “IIS,POP,SMTP,IMAP”
To remove old certificates:
Remove-ExchangeCertificate -Thumbprint …………
Luka Manojlovic 
Thanks you helped me add our new cert. We needed to remove the cert also and referenced
http://www.techieshelp.com/how-to-remove-an-expired-exchange-2007-certificate-and-create-a-new-certificate/
LikeLike
i’m VERY new to this… the step 2, how do you actually do this? as well as steps 3-5.
LikeLike