We have a situation where the Dude notifications on a device being up will make it through, but the down notifications do not. Some info.

1. Mail server does not show any logs for the down alerts. It's like it is never hitting it.
2. Up alerts come through just fine.

Both are going to the exact same e-mails of course. Nothing different except down vs up.

Ideas?

Are you sure that Dude is sending any? Make you have notifications enabled for "unstable -> down".

So is it not enough to have the up->down status checked? down->up is also checked.

Try it and you'll see. Maybe there is a case when it goes from up directly to down, but it's always from up to unstable and then to down for my Dude.