Malware Transport Agent - Should I enable it on Every MailboxServer?

Hello There,

I tried to found an answer to this question but cannot found it anywhere on Technet and also on the Exchange Books that i Have.

In Exchange 2013, should I Enable the AntiMalware Transport Agent on EVERY Mailbox Server? Since mail-flow is based on Delivery Groups (Dags and AD Sites) and always beetween Mailbox Servers through SMTP protocol, i guess that the most secure way to deal with that is to enable it on every MailboxServer in the Organization.

Thanks!