Hello, Yesterday our clients SBS Exchange Server 2007 stopped receiving e-mails, we are able to send and receive internally and send e-mails externally but we are not able to receive e-mails from World. Any help on troubleshooting this issue we will appreciate very much. Lediard

Hi Lediard, Firstly check that you can connect to your SBS from outside your network on port 25. If that works - then check your MX records. LoryanMCSE 2003, MCTS (2008, LCS, OCS, SharePoint) My company | My BPOS blog (BPOSsibility)