We have several notification e-mails that get generated by various systems for our users. I've been asked to make sure all e-mail to [anything]@ourcompany.com doesn't wind up in our users' junk folders.
What is the best and easiest way(s) to do this?
I have seen that you can write a GPO for Outlook to import a list, but it seems like a one-off import... I'm not really sure how that would be manageable in the future.
If you're on Exchange 2007/2010, you can write Transport Rules that will set the SCL level on messages. This influences Outlook's decision to junkmail emails, but isn't 100%. We've also received the 'Shall Deliver' directive for certain messages and spent quite some time explaining how that's not really possible without taking away certain functionality. Specifically, the ability of users to manage their own black/white lists inside Outlook.
I'm not sure how to solve this for Exchange 2000/2003.
The best way is to just add the system IP's to the allowed hosts on the receive connectors and leave the actual email filtering to the anti-spam filters. This way you will reduce the spam that may otherwise enter in the given mailbox.