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Exchange 2007 certificates

We just replaced our Certificate Authority on the domain with a new server 2008 R2 version.  We decommisioned the old server 2003 version.  On our Exchange Server 2007 system we now get an error when sending email using POP.  The error says "The server you are connected to is using a security certificate that could not be verified.  A certificate chain processed, but termicated in a root certificate which is not trusted by the trust provider. Do you want to continue using the server?"  Does anyone know how to fix this and correct the certificate that I assuming is not bad/incorrect? We have a Thawte Cert that is enabled for SMTP, POP, IMAP, IIS, and a self signed enabled for SMTP, and a new cert from the new internal CA also enabled for SMTP.   Any suggestions?
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Tim Lewis
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Tim Lewis
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Tim LewisNetwork ManagerAuthor Commented:
Not sure what this have to do with the issue we are having.  I checked all of these settings and they are still correct from the initial setup.  This cert error only occurs when sending via SMTP.  We changed the server that host our CA and then the error started happening.  The Thawte Cert is still vaild, and still works fine with OWA.  Everything is working fine except SSL sending with SMTP.  I removed all of the old self signed certs and recreated a new one using Get-ExchangeCertificate and enabled it for SMTP leaving the default SMTP cert as the Thawte cert.
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Tim LewisNetwork ManagerAuthor Commented:
NO answer given
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