Running the latest version of GMS and am having issues where mail is no longer flowing to it. I can login via the WebPIM and no changes are being updated. This is happening for all users. I have tried resetting an account or even deleting and re-creating the account. In both cases, this works initially, loading all the information into the WebPIM, but only for an initial sync. After that, again no changes occur.

I am at a total loss and have no idea what to even check. Please help!