What are these .bdr, .bad, .bdp files in the bad mail folder

Everyday our exchange server generates these .bdr, .bad, .bdp in programfile\exchsrvr\mailroot\vsi1\badmail
no one file is above 6kb but there are 100s of them.  Can I get rid of them?  Seems like wasted space?
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MicrotechConnect With a Mentor Commented:
Hi topjimmie,

yes you can delete them safely. http://hellomate.typepad.com/exchange/2003/07/dealing_with_ba.html

Hope This helps
The Badmail folder contains messages that cannot be delivered into your organisation, and also cannot be returned back to the sender
BNettles73Connect With a Mentor Commented:

Those files are what happens when Exchange cannot deliver an NDR (Delivery Status Notification) ..


If you have Exchange 2k3 then you can install the service pack and you won't have to worry about this folder anymore ... if not, then setup a task with a batch file to frequently go in and clear them ... some people use them for diagnostic checking but for a large majority of admins they are useless ...
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