I have a few users who are running into issues sending email to some of our customers so I figured I would check to see if we are blacklisted anywhere. I used the Barracuda blacklist check and see our domain is not blacklisted there and is correctly listed as a Business. However, when I run the blacklist check on MXToolbox we are all clear on every check until the BARRACUDA check which times out. Any idea why and whether that is an issue??