Outlook will not send and recieve

We recently replaced the domain controller on a clients network and rolled all of the workstations over to the new domain. All of the workstations went smoothly with the exception of one that will no longer send and recieve mail through outlook 2000. We verified the settings and even set up the account on another machine which worked perfectly. We tried removing and reloading outlook and are getting the same problem. Basically when you hit send and recieve the send and recive window pops up and there are no tasks listed. We verified that the include this account in send and recieve is checked but it just churns for a couple of seconds and says 0 of 0 tasks. This one has got me tottaly perplexed, any help would be appreciated.