The minimum value is 0. Transport agents with a
priority closer to 0 process emails first.
Enable - TransportAgent
This cmdlet allows you to enable a configured transport agent. For a detailed list run the following in the
Exchange Management Shell: Get-Help Enable-TransportAgent -detailed . The syntax for this
cmdlet and parameters are shown here:
Enable-TransportAgent -Identity < String > [-Confirm [ < SwitchParameter > ]]
[-DomainController < Fqdn > ] [-WhatIf
[ < SwitchParameter > ]]
Some transport agents are installed by default on both the Edge Transport and Hub Transport server but
the number of agents installed differs. Whereas the Hub Transport server has two transport agents by
default ??” the Transport Rule agent and Journaling agent ??” the Edge Transport server has the agents
shown in Figure 9 - 23 installed by default. The agents existing by default on the Hub Transport server do
not exist on the Edge Transport server.
Chapter 9: Confi guring the Edge Transport Server Role
265
Figure 9-23
Figure 9-24
These transport agents, written to take advantage of SMTP events, can be triggered at various stages of
the TransportPipeline as shown in Figure 9 - 24 .
It is worth noting that although message hygiene and other Edge Transport agents are not installed on
a Hub Transport server by default, they can still be installed manually if the Hub Transport server is
Internet facing.
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