Repeating Alerts

I need to alternate alerts between two recipients every ten minutes until alert is acknowledged or fixed. I'd like to notify "user 1" after 10 minutes, 30 minutes, 50 minutes, etc. and "user 2" after 20 minutes, 40 minutes, 60 minutes, etc.

For testing, the alert is defined like:

HOST=testhost.syr.edu MAIL user1 at syr.edu FORMAT=TEXT DURATION>10 REPEAT=20 MAIL user2 at syr.edu FORMAT=SMS DURATION>20 REPEAT=20

The reality is that alerts go to user1 at 10 minutes, nobody at 20 minutes, both users at 30 minutes, nobody at 40 minutes, both users at 50 minutes, and so on.

What's the proper way to accomplish this (we're on Hobbit 4.0.4)?

Thanks,

Peter Murray Computing and Media Services Syracuse University Syracuse NY 13244 <pbmurray at syr.edu>