Hi All, I am a little bit concerned, every time I reboot our Exch Svr the entire company is disconnected from Windows Live Messenger. Does anyone have any clues as to why this might be happening, the Exchange server is not a DC and is not the DHCP, DNS server for any of the network clients. All other internet connectivity from teh clients is fine, just MSN Messenger is diconnected, when I choose to check teh connection it halts at "Ports" and says this is the issue. I repair and all is OK again?? Very strange, just worried something else is causing this. Thanks for any reponses. Brian