#5.7.1 smtp; 550 5.7.1 Message rejected as spam by Content Filtering.
Posted on 2009-05-27
We are using Exchange Server 2007. Some of our clients have tried to send emails from their webmail and they got this reply: #5.7.1 smtp; 550 5.7.1 Message rejected as spam by Content Filtering. These emails contain basically nothing special and still this same error come up. What is wrong in our Exchange. One of this webmail is gmail so I think that there should be everything ok.