Unable Renew Webmail Certificate

Environment; 2003 Exchange front end/back end. Cert server 2003
Domain Controllers: 2 Server 2008, 1 Recent 2008 R2

Our webmail certificate recently expired.  When I try to renew using IIS i can't send renew certificate now.  After alittle digging around I checked opened Cert Authority found the Certificate Service is not running.  When trying to start I get :
"A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file. 0x800b0101 (-2146762495)"

I know my webmail cert has expired but is this causing this problem?  If i try to go look for my cert in Cert Authority MMC all the folders are blank becuase the service is not running.

How can I fix this issue?  Please help!!!
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ozzalotAuthor Commented:
The problem described is when I open Certificate Authority MMC and see the service is stopped.  One of the option if I right the server is renew CA Cert.  Should I try to renew it?  I'm not sure what kind of impact this will have?  The only Cert expired that i know of is my webmail.
David Johnson, CD, MVPOwnerCommented:
you can try to renew the CA certificate

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Microsoft IIS Web Server

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