how to distribute one internet line to multiple services

in my current scenario, I have 4 interfaces configured with different Public IP address and each interface linked to the different router and each interface have different services (Internet Email1, Email2, VPN)

Our Plan to get a new line from a new

SMTP Inbound Decryption

I am trying to setup inbound decryption for SMTP (TLS) using the default Decryption Profile.

What destination IP address do I use in the Decryption Policy: public pre-NAT or private post-NAT?

Regards,

Han.

Interface shutting down

I have a VM-100 running 8.0.12.  I inherated this configuration from the previous network engineer.  I am quite new to PAN-OS and have found that an interface that faces the Internet is shutting down.  

I can cycle the port in the GUI, and able to pin

Multiple Logins for a single user at different stations filtering not functioning - security threat?

I am new to Palo jsut going Live with a unit.  I am seeing when users move from desk to desk and do not log out but login again at the second station their filtering does not function.  They are either filtered as per the last login previously at the