currently i have a policy that will block all emails sent from any .info domain but would like to add few addresses that should receive emails from any .info domains. So, when email from any .info domain is sent to firstname.lastname@example.org it should be received a dn delivered to users. When email from any .info domain is sent to email@example.com it should be blocked on IronPort.
I did create a new policy that has firstname.lastname@example.org as a recipient and it placed before policy that blocks .info emails. Should this be enough or some more steps have to be configured for this to take place?
@endpoint: Your approach should work as expected, as you involve message splintering, so even if a message comes with multiple recipients, only the ones not allowed to receive mail from .info will be blocked. As you supposed correctly, the policies are applied in order from top to bottom of the list. Also maintaining the list is easier with policies accessible from the GUI, while message filters require to have the whole filter changed when a recipient is added/removed (unless you use a dictionary, though)
@Doug, while your solution is also possible, however one problem with your message filter is that it will not work when a message is send to multiple adresses, and one of them is one of the allowed recipients. In this case, the message will pass to all recipients.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...