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Got the answer that the service does not interrupt when I complete the CSR request and import of completely new certificate... thanks
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Got the answer that the service does not interrupt when I complete the CSR request and import of completely new certificate... thanks

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ended up renewing existing cert
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Multi domain certificate offered by digicert is almost $300 in comparison to comodo for only $90. Commodo provides 3 UCC instead of 4+1 from Digicert but I don't even use all 5 and 3 names resolution works perfect for me.<br />
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What will be the impact, if I do new certificate request and migration from digicert to comodo
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Multi domain certificate offered by digicert is almost $300 in comparison to comodo for only $90. Commodo provides 3 UCC instead of 4+1 from Digicert but I don't even use all 5 and 3 names resolution works perfect for me.

What will be the impact, if I do new certificate request and migration from digicert to comodo

Certificate for Exchange

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.

SSL / HTTPS

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.