We currently have our pix 501 nat statement setup with the public IP forwarding smtp traffic to an internal IP which is our exchange box.
So, any mail coming into the network should go to the Anit-Spam box 192.168.10.4.
There is one company that tries to email my client and cannot bypass the anti spam because they have some type of encryption enabled on all thier mail. Instead of purchasing the moduel for the Anti Spam box that will fix the problem, I wanted to see if there is any way to fix the problem through the Pix.
I want to try to create a route straight to the exchange and bypass the anti spam box only for this company only. All others that try to send email to my client it should go through the antiSpam. Sort of like a "If then statement".
Don't know if what I am doing can be possible. Any ways i need to confirm this is not possible or if there is a solution. Below is the nat statement.
static (inside,outside) tcp 18.104.22.168 smtp 192.168.10.4 smtp netmask 255.255.2
55.255 0 0