I had the same problem when we switched from one ISP ot the other I was running both for a couple of months.
Turned out that, as Jeremy Lunn suggested, that my new ISP wouldn't allow IPs from a different Net be routed through his net, which is of course very sensible and right. However, in my case it was the only way to get my setup working so after long discussions with the admins they would allow only the one IP address of my multi-homed machine in their net which solved the problem. I'm aware of the implications it had then but it was only a temporal matter in my case. - cheers, Peter /----------------------------------------------\ | Dipl.-Ing. Peter Burgstaller | | Technical Assistant and System Administrator | | @ all information network & services gmbh | | email: [EMAIL PROTECTED] | | phone: +43 662 452335 | | fax : +43 662 452335 90 | \----------------------------------------------/