Outlook 2011 for Mac stopped syncing

My outlook has been working wonderful for the last couple of years with my mail server and just suddenly last night it stopped receiving new e-mails. I reset the settings and created a new database and deleted the old ones so see if resetting outlook would allow me to retrieve my mail. It didn't work at all. Now outlook only syncs about 14 messages in my inbox and doesn't receive any new mail since yesterday. It won't allow me to load any older messges in my inbox since wednesday. I can send mail fine. All my sub folders in my inbox load and I can load old e-mails in them. I can't find anything that will work to fix this issue. I have outlook software on both macs and both are having the same issue which leads me to believe it's a server issue, except for the fact that I can send/receive e-mail perfectly on all other  software (Apple Mail/Iphone/ipad/)

Any idea what's going on with outlook?

Update: I reinstalled outlook and now I'm gettting an "unknown error" and no mail is showing up in the inbox but the containing folders are still there.