[PS] C:>Get-ExchangeCertificate | select thumbprint,services,notafter,subject,certificatedomains | where {$_.Services -
match "SMTP"} | fl
Thumbprint         : 21D75A8C5BA4003005DF16D5EF577DE4563114D1
Services           : IMAP, POP, IIS, SMTP
NotAfter           : 10/08/2015 10:00:00 PM
Subject            : CN=mail.exchangeserverpro.net, OU=IT Department, O=LockLAN Systems Pty Ltd, L=Hemmant, S=Qld, C=AU
CertificateDomains : {mail.exchangeserverpro.net, AutoDiscover.exchangeserverpro.net, exchangeserverpro.net,
smtp.exchangeserverpro.net, pop.exchangeserverpro.net, imap.exchangeserverpro.net}
Thumbprint         : E769A3DB29AA4EA612B2C27D78CE01EBDB1C7005
Services           : SMTP
NotAfter           : 11/06/2019 7:40:13 PM
Subject            : CN=EX2013SRV1
CertificateDomains : {EX2013SRV1, EX2013SRV1.exchangeserverpro.net}
Thumbprint         : 5C5E9124B0960BBFB570596AAE6902742D95361E
Services           : SMTP
NotAfter           : 27/05/2019 10:05:25 PM
Subject            : CN=EX2013SRV1
CertificateDomains : {EX2013SRV1, EX2013SRV1.exchangeserverpro.net}

使用PowerShell将绑定的证书设置为None

C:>Enable-ExchangeCertificate -Services None -Thumbprint 5C5E9124B0960BBFB570596AAE6902742D95361E

删除证书

[PS] C:>Remove-ExchangeCertificate -Thumbprint 5C5E9124B0960BBFB570596AAE6902742D95361E
Confirm
Are you sure you want to perform this action?
Remove certificate with thumbprint 5C5E9124B0960BBFB570596AAE6902742D95361E from the computer's certificate store?
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [?] Help (default is "Y"): y