Messaging Gateway

Hi,

Does SBG classify inbound email by looking at the To address and if the email is a local domain email (as listed under protocols -> domains) 

or is it based on the ip address of the inbound / outbound network adapter?

i.e our current setup is 1 IP address for the virtual machine running  SBG and the inbound and outbound configuration is listening on two different ports.

all of our servers that are allowed to relay email have will be configured to point to the outbound port because as I understand it, SBG will re-route emails which are local domain to the incoming side of SBG and deliver them that way.

the reason why I ask is we stop all multimedia files. Users have to ring the helpdesk to get approval for them to be released.  I only want the notification email to be sent internally.  I.e  if someone internally sends an AVI file  then the sender gets the notification.  If an external party emails someone internally with an AVI file .. I want the receiver to get the notification.  know that I can do this by setting up two content rules and obviously two email notification configurations.  the question above relates - how does SBG determine that?  if it is based on the connection then I'm screwed.. if it is based on the to/from field then it should work.

I hope this makes sense...

Thank you
Justin

It's based on the flow direction --  with a single IP and two ports, you still have two connections  Apply one policy to the inbound flow, and a different policy to the outbound flow.

Create the two policies (BlockMedia-Inbound, notify recipient,    BlockMedia-Outbound, notify sender).
Over in Admin/Groups,  add the inbound policy to the inbound settings, and the outbound policy to the outbound settings.