2003 VPN Client Connect Problems

I have a demand dial interface setup on a 2003 server in order to VPN into
another network. The interface was created several months ago without any
problems. The connection was setup to be persistent. Recently the connection
was dropped and now it will not reconnect. The unreachability reason given
is: "The connection was terminated by the remote computer before it could be
completed."

Tracing is enabled. I've found the following in the PPP.LOG. It looks like
to me packets are being sent out but replies are never received. Here's a
snippet of the log.

[3540] 10-27 21:56:09:406: <PPP packet sent at 10/27/2004 20:56:09:406
[3540] 10-27 21:56:09:406: <Protocol = LCP, Type = Configure-Req, Length =
0x17, Id = 0x8, Port = 5
[3540] 21:56:09:406: <C0 21 01 08 00 15 01 04 05 78 05 06 60 77 08 C5
|.!.......x..`w..|
[3540] 21:56:09:406: <07 02 08 02 0D 03 06 00 00 00 00 00 00 00 00 00
|................|
[3540] 10-27 21:56:09:406:
[3540] 10-27 21:56:09:406: InsertInTimerQ called
portid=14,Id=8,Protocol=c021,EventType=0,fAuth=0
[3540] 10-27 21:56:13:406: Recv timeout event received for
portid=14,Id=8,Protocol=c021,fAuth=0
[3540] 10-27 21:56:13:406: NotifyCaller(hPort=5, dwMsgId=9)
[3540] 10-27 21:56:13:406: <PPP packet sent at 10/27/2004 20:56:13:406
[3540] 10-27 21:56:13:406: <Protocol = LCP, Type = Configure-Req, Length =
0x17, Id = 0x9, Port = 5
[3540] 21:56:13:406: <C0 21 01 09 00 15 01 04 05 78 05 06 60 77 08 C5
|.!.......x..`w..|
[3540] 21:56:13:406: <07 02 08 02 0D 03 06 00 00 00 00 00 00 00 00 00
|................|
[3540] 10-27 21:56:13:406:
[3540] 10-27 21:56:13:406: InsertInTimerQ called
portid=14,Id=9,Protocol=c021,EventType=0,fAuth=0
[3540] 10-27 21:56:17:406: Recv timeout event received for
portid=14,Id=9,Protocol=c021,fAuth=0
[3540] 10-27 21:56:17:406: Request retry exceeded
[3540] 10-27 21:56:17:406: FsmThisLayerFinished called for protocol = c021,
port = 5
[3540] 10-27 21:56:17:406: NotifyCaller(hPort=5, dwMsgId=10)
[3436] 10-27 21:56:17:437: PPPEMSG_LineDown recvd, hPort=5

[3540] 10-27 21:56:17:437: Line down event occurred on port 5
[3540] 10-27 21:56:17:546: FsmDown event received for protocol c021 on port
5
[3540] 10-27 21:56:17:546: RemoveFromTimerQ called
portid=14,Id=9,Protocol=c021,EventType=0,fAuth=0
[3540] 10-27 21:56:17:546: FsmReset called for protocol = c021, port = 5
[3540] 10-27 21:56:17:546: RemoveFromTimerQ called
portid=14,Id=0,Protocol=0,EventType=3,fAuth=0
[3540] 10-27 21:56:17:546: RemoveFromTimerQ called
portid=14,Id=0,Protocol=0,EventType=7,fAuth=0
[3540] 10-27 21:56:17:546: RemoveFromTimerQ called
portid=14,Id=0,Protocol=0,EventType=2,fAuth=0
[3540] 10-27 21:56:17:546: RemoveFromTimerQ called
portid=14,Id=0,Protocol=0,EventType=1,fAuth=0
[3540] 10-27 21:56:17:546: RemoveFromTimerQ called
portid=14,Id=0,Protocol=c029,EventType=0,fAuth=0
[3540] 10-27 21:56:17:546: LcpEnd
[3540] 10-27 21:56:17:546: Post line down event occurred on port 5
[3540] 10-27 21:56:17:546: NotifyCaller(hPort=5, dwMsgId=23)

I have an identical 2003 server setup with the same configuration settings
sitting right next to this server on the same network. It is currently
connected to the remote network. I haven't tried disconnecting and then
reconnecting it for fear that it wouldn't reconnect and it is critical that
at least one of the servers be connected for the application we are running.
I've contacted our hosting company and they have successfully connected to
the remote network from one of their computers sitting on their network. I
also have a 2000 server sitting on a different network than the 2003
servers. It has the same demand dial configuration as the 2003 servers. I've
successfully connected and disconnected to the remote network many times
from it.

Any thoughts on why the one 2003 server won't connect?