Help plz, How to delete messages??

[david . heydari]

Hi everybody,

One of our user has tried to send more than 30000 mail (outlook autoreplay
forth and back!!) to an 
external account on "SomeDomain.com" , his account is now locked out on the
remote domain, 
worse is that they do'nt accept any mail from our mailserver at all and
there is more than 25000 
mail left on our mail queque, how can i remove them (only for one spec.
user), there is some 
important mail (from other users) among them.

best regards
/David