Is anyone using this? If so, is it any good? I'm thinking of using it, as Spam Assassin has been next to useless for the last few months, and I now get huge amounts of spam.
I know - I'll do a poll. I've never done one of those before
I voted "It's great" for your poll, but there's a caveat. It didn't always work great, in fact it was pretty useless for awhile.
The major issue was that when it was setup, there were two MX records listed for my account. The primary one went through the Edefense server, and the secondary went straight to my email server.
We got tons of spam that went around Edefense. I suspect that when spammers send out emails, they send the spam to all the possible servers, not just the one listed as the primary one.
This was eventually resolved by removing the secondary MX record, but it took months to get to that point. Lunarpages support basically said "well, we can't help it if people send email directly to your server and not through EDefense".
After some persistence on insisting this is a problem, a different tech suggested we try removing the secondary address. Once this was done, the vast majority of the spam going around EDefense evaporated. I was getting hundreds of spam emails a day, and it went down to a few a week.
So, I think it's a very useful service and I couldn't imagine being without it. About 70-90% of our daily emails are spam. I just wish that Lunarpages support had been a bit better in responding and solving the problem, rather than denying there was a problem in the first place.