CertCopy MailEnable

Stop-Service -DisplayName "MailEnable*"

$FileName = "C:\mypfx.pfx"
$serverName = "CN=mail.xyzdomain.com"
if (Test-Path $FileName)
{
  Remove-Item $FileName
}

$mypwd = ConvertTo-SecureString -String "1234" -Force -AsPlainText
$thumb = Get-ChildItem Cert:\LocalMachine\WebHosting `
   | where{$_.Subject -eq $serverName}
$final = $thumb.Thumbprint
Get-ChildItem -Path cert:\LocalMachine\WebHosting\$final | Export-PfxCertificate -FilePath $FileName -Password $mypwd

try {
  Get-ChildItem Cert:\LocalMachine\My | Where-Object {$_.Subject -eq $serverName} | Remove-Item
} catch {}

Import-PfxCertificate -FilePath $FileName -CertStoreLocation Cert:\LocalMachine\My -Password $mypwd

if (Test-Path $FileName)
{
  Remove-Item $FileName
}

Start-Service -DisplayName "MailEnable*"