Originally Posted by JSanders
Yes, kill spam at the server level. First and optimal line of defense.
You have another thing that you can do to kill spam if you don't want to move your email to Google Apps. If you are getting domain email for accounts other than your own then you have the catch all feature of your web host mail enabled and it is set to your address. Turn that off. Or set it to forward to another account. That will diminish the amount of spam that lands on your BlackBerry and in your inbox.
Google Apps will stop it. I have had one of my domains for 10 years or more and the spammers love to fill me up. I get about 2,000 messages a day at my account there and all but 30 or so on average are spam. All 2,00 used to land in my Outlook inbox (and at the time my Treo as well) but since the switch to Google Apps, about 2 years ago maybe, I have gotten 1 spam message that ended up in my inbox. Just 1.
For about the first year I used to go through my spam box every day to make sure there were no false positives. After a year, maybe a little more, of never finding one I stopped doing that. I have moved all of my domains to Google Apps and couldn't be happier.
There are free and paid versions of Google Apps. Free is free and the paid is $50 per user, per year. I go the paid route for some of the extra goodies and it only costs me about 40% of what hosted exchange would. I'm not getting contact and calendar sync the way that I would with Exchange, but I'm OK with that.
Read about it here: Google Apps