Export the existing certificate(s) from the first server
Exporting the Exchange certificate (Exchange 2007 server)
The organization's certificate is exported using this command in the EMC:
Export-ExchangeCertificate -Thumbprint 11111a22222222b33333 -BinaryEncoded:$True -Path C:\E2K10-Cert-Export\export-for-e2k10.pfx -Password (Get-Credential).Password
Otherwise, if you want détails on each of the parameters, you can consult the Micosoft documentation on the Export-ExchangeCertificate cmdlet:
Import the certificates into the second server
I have also, for this example, placed the necessary files in the C:\Certs folder.
1. Click on the Start Menu and open CERTMGR.msc
Start | All Programs | Administrative Tools | CERTMGR.msc
2. Go to the "Intermediate Certification Authorities" folder and then to the "Certificates" subfolder. Right-click and select "All Tasks, Import".
Click "Next". Make sure the "Intermediate Certification Authorities" store is targeted.
Click "Next", confirm the operation and then "Finish". You can confirm the success (or failure) of the operation by verifying the certificate has been added to the local computer certificate store:
Exchange certificate (provided specifically for your organization)
1. Import the certificate.
Import-ExchangeCertificate -FileData ([Byte]$(Get-Content -Path c:\certs\export-for-e2k10.pfx -Encoding byte -ReadCount 0)) -Password:(Get-Credential).password
2. Enable the certificate.
Enable-ExchangeCertificate -Thumbprint 11111a22222222b33333 -Services "IMAP, IIS, POP, SMTP"
Well, does it work?