Yes, you can see and remove IDS blocks by logging in as a System Administrator, upon logging in you are taken to the Manage tab. On that Manage tab there should be a section called IDS Blocks. This page will show you all of your IDS blocks broken down by protocol and type, you can remove entries from these lists and the user should be able to send/login in again.
Matt Petty
Senior Software Developer
SmarterTools Inc.
www.smartertools.com