Exchange 2010 Cert Renewal

Hi,

My exchange cert is about to expire and I need to renew it.  In order to renew it I need to generate a new cert request using this method here correct? http://technet.microsoft.com/en-us/library/ee332322.aspx

The original cert request that we used to get the first/original license won't work correct?
Treadstone21Asked:
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Alan HardistyCo-OwnerCommented:
It won't be a problem for internal mail-flow - but don't delete the old cert - there is no need.

Just renew the current cert asap and if you need help importing, adding the private key and enabling it, let me know.
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Alan HardistyCo-OwnerCommented:
You don't need to create a new request - just renew with your cert provider and download the cert, then install the cert, repair the certificate store to add the private key and then enable the certificate.
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Treadstone21Author Commented:
Ok, I have an issue where I have 4 servers.  Server1 has the HT and Mailbox role installed. Server2 with the HT role only, and Server3 and Server4 with the CAS role each and in the CAS array.

Now Server1, the server in question has the expiring cert.  So If I remove the SSL cert and uninstall the HT roll, will transport services automatically fail over to Server2?  Or can I remove the SSL cert and keep the HT installed for internal mailflow (using the self assigned cert)?
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Alan HardistyCo-OwnerCommented:
You don't need to remove a certificate to renew it.  Leave the existing one alone, renew it and then download / install the renewed certificate.
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Treadstone21Author Commented:
It expires tomorrow and I don't have time to renew it.  I removed the CAS role earlier this month. So I think we should be ok if I remove the expiring ssl cert right? and leave the self assigned on.
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Alan HardistyCo-OwnerCommented:
Self-signed certs won't work unless Exchange has been messed about with.

If you remove the cert - you will stop things that rely on it.

Renewing the cert takes minutes - you just need to renew it.  You won't have to go through the process of requesting it and waiting for approval - you just need to pay and renew, then download, import, repair the private key and enable - it is that simple.
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Treadstone21Author Commented:
Thanks for your assistance/paitence.   So your saying the self assign won't work for internal mail flow only?
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Treadstone21Author Commented:
Internal mailflow worked fine
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