Uninstalls the old and retired Antispam Agents from an Exchange Server

Remove-AntiSpamAgents.ps1

<#
		.SYNOPSIS
		Uninstalls the old and retired Antispam Agents from an Exchange Server
	
		.DESCRIPTION
		Microsoft announced that they deprecated the support for the SmartScreen Antispam content
		filters for Exchange Servers. This script uninstalls the old an retired SmartScreen Antispam
		Agents from the local Exchange Server.
		This is an easy to use and light weight replacement for Uninstall-AntiSpamAgents.ps1 from
		the \Scripts of your Exchange Installation, it will remove just the dead parts and leave the
		rest as it is. Some find that it might be better to leave the rest intact.

		.EXAMPLE
		PS C:\> Remove-AntiSpamAgents

		.NOTES
		Find a suitable an solid replacement solution for your email hygiene. This could be any 3rd
		party solution on premise or cloud. Never use email without any good email hygiene!

		If you want, you might run the Uninstall-AntiSpamAgents.ps1 from the \Scripts folder created
		by Setup during Exchange installation. It removes erything related to the AntiSpamAgents.

		Taken from the links below.

		.LINK
		https://blogs.technet.microsoft.com/exchange/2016/09/01/deprecating-support-for-smartscreen-in-outlook-and-exchange/

		.LINK
		https://blogs.technet.microsoft.com/exchange/2017/03/23/exchange-server-edge-support-on-windows-server-2016-update/
#>
[CmdletBinding(ConfirmImpact = 'Medium',
SupportsShouldProcess = $true)]
param ()

BEGIN
{
	# Constants
	$STP = 'SilentlyContinue'
	
	# Agents to remove
	$TransportAgentsToRemove = 'Content Filter Agent', 'Sender Id Agent', 'Protocol Analysis Agent'
}

PROCESS
{
	# Loop over the List
	foreach ($TransportAgentToRemove in $TransportAgentsToRemove)
	{
		# Do we have the agent we would like to remove?
		if (Get-TransportAgent -Identity $TransportAgentToRemove -ErrorAction $STP -WarningAction $STP)
		{
			Write-Verbose -Message "Try to remove $TransportAgentToRemove"
			
			try
			{
				# Do it, or dry run it?
				if ($pscmdlet.ShouldProcess("$TransportAgentToRemove", 'Remove TransportAgent'))
				{
					# Remove it...
					$paramUninstallTransportAgent = @{
						Identity      = $TransportAgentToRemove
						ErrorAction   = $STP
						WarningAction = $STP
						Confirm       = $false
					}
					Uninstall-TransportAgent @paramUninstallTransportAgent
				}
			}
			catch
			{
				# Whoopsss
				Write-Warning -Message "Unable to remove $TransportAgentToRemove"
			}
			
			Write-Verbose -Message "$TransportAgentToRemove was removed"
		}
		else
		{
			Write-Verbose -Message "Sorry, $TransportAgentToRemove was not found..."
		}
	}
	
}

#region License
<#
		Copyright (c) 2016, Joerg Hochwald (http://jhochwald.com). All rights reserved.

		Redistribution and use in source and binary forms, with or without modification, are permitted
		provided that the following conditions are met:

		1.	Redistributions of source code must retain the above copyright notice,
		this list of conditions and the following disclaimer.

		2.	Redistributions in binary form must reproduce the above copyright notice, this list of
		conditions and the following disclaimer in the documentation and/or other materials
		provided with the distribution.

		3.	Neither the name of the copyright holder nor the names of its contributors may be used
		to endorse or promote products derived from this software without specific prior
		written permission.

		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
		IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
		AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
		CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
		DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
		ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

		By using the Software, you agree to the License, Terms and Conditions above!
#>

<#
		This is a third-party Software!

		The developer of this Software is NOT sponsored by or affiliated with Microsoft Corp (MSFT) or any of its subsidiaries in any way

		The Software is not supported by Microsoft Corp (MSFT)!
#>
#endregion License