Convert dl to mail enabled security group

A nice question!

To convert a Distribution List (DL) to a Mail-Enabled Security Group (MESG) in Exchange, you can follow these steps:

Method 1: Using the Exchange Management Console

  1. Open the Exchange Management Console.
  2. Navigate to the "Recipient Configuration" node.
  3. Right-click on the Distribution List you want to convert and select "Convert to Mail-Enabled Security Group".
  4. Confirm the conversion by clicking "Yes" in the prompt.

Method 2: Using the Exchange Management Shell

  1. Open the Exchange Management Shell.
  2. Run the following command to convert the Distribution List to a Mail-Enabled Security Group:
    New-DistributionGroup -Identity <DLName> -Type SecurityGroup

    Replace <DLName> with the name of the Distribution List you want to convert.

Method 3: Using PowerShell

  1. Open PowerShell.
  2. Run the following command to convert the Distribution List to a Mail-Enabled Security Group:
    Get-DistributionGroup -Identity <DLName> | New-DistributionGroup -Type SecurityGroup

    Replace <DLName> with the name of the Distribution List you want to convert.

After converting the Distribution List to a Mail-Enabled Security Group, you can manage the group's membership and settings using the Exchange Management Console or the Exchange Management Shell.

Note: Before converting a Distribution List to a Mail-Enabled Security Group, make sure that the group is not being used by any applications or services that rely on its Distribution List functionality.