We are a business that uses Server 2003 and Mail Exchange 2007. Over the past month or so we have been getting our business emails blocked by Barracuda? These are emails that have gone to these recipients for years with no problems. Suddenly we are finding rejections by many of our business partners. My research show that they may be using a Barracuda appliance? It seems funny that all these companies suddenly decided to use this exact appliance, if that's what they are doing. How can I fix this?
barracuda.theshoemart.com #554 Service unavailable; Client host [188.8.131.52] blocked using Barracuda Reputation; http://bbl.barracudacentral.com/q.cgi?ip=184.108.40.206 ##