In exchange management console:
get-exchangecertificate |fl
*/ retrieve thumbprint
get-exchangecertificate -thumbprint C855B3109414AF729B2E825285691D4A5F241D62 | New-ExchangeCertificate -DomainName remote.vespoli.com.au, server1.vespoli.com.au, vespoli.com.au
A
*/ retrieve new thumbprint
enable-exchangecertificate -thumbprint 97877881298A22B80B327E2A350DF0DF3DFE1153 -services:IIS,SMTP,POP,IMAP
get-exchangecertificate |fl
*/ check new certificate
See before and after logs for more information (ignore first part of change.txt due to remote.vespoli.com.au not applied, so had to manually apply)