Try this, the script gets the contact object and creates a new address for each address that ends with '@domain.com'.
Test in a lab environment before running in production.
Get-MailContact -ResultSize Unlimited | Foreach-Object {
$NewEmailAddresses = $_.EmailAddresses | Foreach-Object {
if($_.PrefixString -eq 'smtp' -and $_.SmtpAddress -like '*@domain.com' )
{
$new = $_.SmtpAddress -replace '@domain.com','@something.com'
if($_.IsPrimaryAddress)
{
([Microsoft.Exchange.Data.SmtpProxyAddress]$new).ToPrimary()
}
else
{
[Microsoft.Exchange.Data.SmtpProxyAddress]$new
}
}
else
{
$_
}
}
$_ | Set-MailContact -EmailAddresses $NewEmailAddresses
-EmailAddressPolicyEnabled $false
}
Shay Levy [MVP]
PowerShay.com
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