Certificate Microsoft Exchange Server Auth certificate expiry renewal

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  Certificate Microsoft Exchange Server Auth certificate expiry renewal : MS Exchange 2013

  Hi ,
  
  I have a got few certificates .
  1. "Microsoft Exchange Server Auth certificate" ,
  2.Microsoft Exchange.
  3.Exchange Delegation Federation.
   certificates which are  going to expire soon on CAS SERVER 1,CAS SERVER 2,MAILBOX SERVER 1 & MAILBOX SERVER 2 of my exchange server 2013 Enterprise in DAG . How do i renew the Certificate or do these certificates really required?

  Tuesday, August 28, 2018 8:07 AM