Remove exchange contact internal smtp addresses

Question

I am looking for a way to remove the internal email addresses created when creating a mail contact in Exchange 2019. I can go into each account in Active Directory and remove them but I would rather do it with PowerShell if possible. Specifically using the import-csv command. Does anyone know if that is possible?

Thanks

Answer 1

Hi, StaceD

Great to know that the issue has already been resolved and thanks for sharing the solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "[The question author cannot accept their own answer. They can only accept answers by others Accept answers on Microsoft Q&A | Microsoft Learn]", I'll repost your solution in case you'd like to "[Accept]" the answer : )     

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Issue Symptom: 

Remove the internal email addresses created when creating a mail contact in Exchange 2019 

Resolution: 

$mailContacts = Import-Csv -Path "C:\XXXX\MailContactsToUpdate.csv"

#Loop through each contact in the CSV

foreach ($contact in $mailContacts){

# Get the email address from the CSV
$emailAddress = $contact.'Email Address'
# Get the mail contact
$mailContact = Get-MailContact -Identity $emailAddress -ErrorAction SilentlyContinue
# Check if the mail contact exists
if ($mailContact) {
    # Get the current email address (proxy addresses)
    $currentEmailAddresses = $mailContact.EmailAddresses
    # Remove only internal email addresses (proxy addresses starting with "SMTP:")
    $updatedEmailAddresses = $currentEmailAddresses | Where-Object { $_ -Clike 'SMTP:*' }
    # Allows the set-mailcontact command to run
    Get-Mailcontact -Identity $mailContact.Name | Set-Mailcontact -EmailAddressPolicyEnabled $false
    # Set the updated email addresses
    Set-MailContact -Identity $emailAddress -EmailAddresses $updatedEmailAddresses -ErrorAction Stop
    Write-Host "Updated: $emailAddress"
} else {
    Write-Host "Mail contact not found: $emailAddress"
}

}

Answer 2

Hello Stace

Here is PowerShell script:

Import the CSV file

$mailContacts = Import-Csv -Path "C:\Path\To\MailContactsToUpdate.csv"

Loop through each contact in the CSV

foreach ($contact in $mailContacts) {

# Get the email address from the CSV

$emailAddress = $contact.EmailAddress

# Get the mail contact

$mailContact = Get-MailContact -Identity $emailAddress -ErrorAction SilentlyContinue

# Check if the mail contact exists

if ($mailContact) {

    # Get the current email address (proxy addresses)

    $currentEmailAddresses = $mailContact.EmailAddresses

    # Remove only internal email addresses (proxy addresses starting with "SMTP:")

    $updatedEmailAddresses = $currentEmailAddresses | Where-Object { $_ -notlike 'SMTP:*' }

    # Set the updated email addresses

    Set-MailContact -Identity $emailAddress -EmailAddresses $updatedEmailAddresses -ErrorAction Stop

    Write-Host "Updated: $emailAddress"

} else {

    Write-Host "Mail contact not found: $emailAddress"

}

}

Answer 3

Thank you both for your help. It didn't work exactly like I wanted so a co worker of mine made some changes to it and now it works perfectly!! You saved me a lot of time. I put the modified script below.

$mailContacts = Import-Csv -Path "C:\XXXX\MailContactsToUpdate.csv"

#Loop through each contact in the CSV

foreach ($contact in $mailContacts){

# Get the email address from the CSV

$emailAddress = $contact.'Email Address'



# Get the mail contact

$mailContact = Get-MailContact -Identity $emailAddress -ErrorAction SilentlyContinue

# Check if the mail contact exists

if ($mailContact) {

    # Get the current email address (proxy addresses)

    $currentEmailAddresses = $mailContact.EmailAddresses

    # Remove only internal email addresses (proxy addresses starting with "SMTP:")

    $updatedEmailAddresses = $currentEmailAddresses | Where-Object { $_ -Clike 'SMTP:*' }

    # Allows the set-mailcontact command to run

    Get-Mailcontact -Identity $mailContact.Name | Set-Mailcontact -EmailAddressPolicyEnabled $false

    # Set the updated email addresses

    Set-MailContact -Identity $emailAddress -EmailAddresses $updatedEmailAddresses -ErrorAction Stop

    Write-Host "Updated: $emailAddress"

} else {

    Write-Host "Mail contact not found: $emailAddress"

}

}