Tools to wash email-lists for bouncing addresses

[Anders Nordby]

Hello!

I have some mail lists with a lot of bouncing addresses that has been
ignored for too long. How can I automatically wash them? I'd like to
have a list of addresses to remove based on bounced mails, and that have
been bouncing for a certain period or number of times. Preferably
without sending probes, but if I have to I might consider that too. What
are you guys doing to handle such issues? Is there any tools you would
recommend?

PS: Yes, this is mails to actual customers, I'm not in the spamming
business.

Cheers,

-- 
Anders.