Here are a few things you could look into...
1. Disable active caching. (Internet Service Manager). It's good to stop
and restart all the proxy services after you make this change.
2. Disable LAN Manager broadcasts. In network properties, under the
services tab, check out the properties for 'server'. Make sure that the box
at the bottom labelled "Make browser broadcasts to LAN Manager 2.x Clients"
is not selected.
3. Make sure the clients/workstations are not accessing the Internet due to
programs such as active desktop, internet mail services (local), or other
'net updated applications (BackWeb, etc). To do this, shut down all the
clients and see if the problem persists. If it doesn't, then you know it's
one or more of the workstations. Bring them up one at a time and see if the
problem returns. When you pinpoint the workstation, see if any of the above
softwares are running.
4. Make sure the problem isn't with Exchange. Disable IMS/IMC so that it
doesn't attempt to dial out.
5. Disable WINS for the RAS bindings.
6. Make sure the problem is not with your ISP. Some ISPs seem to be
sending back signals that keep the connection alive. Check your connection
statistics to see if the transfer that keeps the connection alive is inbound
Other resources: http://web.infoave.net/~solutions/sbs.htm, MSKB articles
Q150820, Q181407, Q184833, Q171360
Hopefully this helps. The solution seems to be different for different
> SBS dial-up connection often dials without need!
> I've configured Internet Mail Service to call every
> 6 hours.
> I've configured Web Proxy (Version 2) without
> active caching.
> But SBS dials and dials (not mail) without any
> user request. What's the reason for this (in
> Germany expensive) behaviour?
> TIA Reinhard Thomann