Strange mail folder taking up space: /home/<useracct>/mail/new

[esolutions]

Hi,
I recently found an odd folder taking up 81 MB of a customer's account quota, but I'm not sure what its for. Its at /home/<useraccount>/mail/new and its full of emails for the client but cPanel shows all their accounts as empty (they use Outlook and delete the mail off of the server).

The files are named as follows: 1173202680.H585747P3602.myserver.mydomain.com, 1173123558.H391620P10557.myserver.mydomain.com, etc.

Does anyone know what this folder is for and how I can keep mail from building up in there? Thanks.

[softexp23]

Hello,

I think this is the default addres which collects all the garbage. so it's useracct@hisdomain.com . And these are spam i guess, meaning emails which didn't get the right addres @hisdomain.com and landed there. You can set default address to :blackhole:

[easyhoster1]

Thats right...or set up a .forward file in the users root and add

/dev/null

to discard any further mail to the domain except malboxes that have been created.