We have a Watchguard Firebox x550e with SpamBlocker. It is great, but I need help with one thing.
Our exchange 2003 server is hosted at our location (the same as the firebox). We can get emails from people in the company just fine. We also have a server hosted by MediaTemple that is not at our location.
On this server we have a few websites that send email confirmations using our company's email address. It goes fine to outside users, but when we try to send emails to our users they get blocked.
This is good because a lot of spam tries to act like someone internal, so i see why it does this, but is there a way to allow this certain server from mediatemple to send emails to our company without allowing all emails that are "pretending" to be us go through?