Hi,
Our server (Windows Server 2003) was switched off over night when we lost
power to the building. When it was all switched back on again we have
started to have problems getting on the internet. I have narrowed it down to
the DNS as Skype works on all the computers. If I set the Preferred DNS
server on one of the client computers to the same as the Default Gateway
instead of the Server's IP then we are able to access the internet without
any problems. I can't find any errors relating to this problem in Event
Viewer. I have rebooted the server and the TS server a number of times. Once
it all started to work OK but after about an hour or so all connection was
lost again.

If I plug a laptop directly into the router then I can get on without any
problems. I can also access the network from outside using the Router VPN
and then onto remote desktop.

Is there something that I can do to reset the DNS settings on the server and
possibly reset all the DHCP settings too?



Cheers
Lenny

"lenny109" <lenny@newsgroup> wrote in message
news:9pudndPs8Ilt8C_XnZ2dnUVZ8r-dnZ2d@newsgroup

> Hi,
> Our server (Windows Server 2003) was switched off over night when we lost
> power to the building. When it was all switched back on again we have
> started to have problems getting on the internet. I have narrowed it down
> to the DNS as Skype works on all the computers. If I set the Preferred DNS
> server on one of the client computers to the same as the Default Gateway
> instead of the Server's IP then we are able to access the internet without
> any problems. I can't find any errors relating to this problem in Event
> Viewer. I have rebooted the server and the TS server a number of times.
> Once it all started to work OK but after about an hour or so all
> connection was lost again.
>
> If I plug a laptop directly into the router then I can get on without any
> problems. I can also access the network from outside using the Router VPN
> and then onto remote desktop.
>
> Is there something that I can do to reset the DNS settings on the server
> and possibly reset all the DHCP settings too?
>
> Cheers
> Lenny
>

Please look in the Event logs (App, System, Directory Service, etc, logs)
and post any errors you see. Post the EventID# and source names, please.

Apparently the hard shutdown could have caused an issue with AD, which could
snowball into other issues.

Let's try to not use the router or anything else other than the SBS as the
DNS address in order to keep things configured correctly for right now.

Are you familiar with using nslookup to test DNS queries?

If not, open a CMD prompt (Start/Run, type in CMD, enter.
Type in nslookup, enter
Then at the ">" prompt, type in www.yahoo.com and hit enter.

> www.yahoo.com

(it should give you a response here)

If it doesn't respond, let us know what type of error shows up.

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.

thanks for that. I have just logged on remotely and am able to connect to
the internet via the remote desktop session. Maybe it has cured it's self.
Staff will be back in the morning so I will check it from the office then
and get back.
Cheers

"Ace Fekay [MCT]" <aceman@newsgroup> wrote in message
news:%234nNHU8NKHA.220@newsgroup

> "lenny109" <lenny@newsgroup> wrote in message
> news:9pudndPs8Ilt8C_XnZ2dnUVZ8r-dnZ2d@newsgroup

>> Hi,
>> Our server (Windows Server 2003) was switched off over night when we lost
>> power to the building. When it was all switched back on again we have
>> started to have problems getting on the internet. I have narrowed it down
>> to the DNS as Skype works on all the computers. If I set the Preferred
>> DNS server on one of the client computers to the same as the Default
>> Gateway instead of the Server's IP then we are able to access the
>> internet without any problems. I can't find any errors relating to this
>> problem in Event Viewer. I have rebooted the server and the TS server a
>> number of times. Once it all started to work OK but after about an hour
>> or so all connection was lost again.
>>
>> If I plug a laptop directly into the router then I can get on without any
>> problems. I can also access the network from outside using the Router VPN
>> and then onto remote desktop.
>>
>> Is there something that I can do to reset the DNS settings on the server
>> and possibly reset all the DHCP settings too?
>>
>> Cheers
>> Lenny
>>

>
>
> Please look in the Event logs (App, System, Directory Service, etc, logs)
> and post any errors you see. Post the EventID# and source names, please.
>
> Apparently the hard shutdown could have caused an issue with AD, which
> could snowball into other issues.
>
> Let's try to not use the router or anything else other than the SBS as the
> DNS address in order to keep things configured correctly for right now.
>
> Are you familiar with using nslookup to test DNS queries?
>
> If not, open a CMD prompt (Start/Run, type in CMD, enter.
> Type in nslookup, enter
> Then at the ">" prompt, type in www.yahoo.com and hit enter.
>

>> www.yahoo.com

> (it should give you a response here)
>
> If it doesn't respond, let us know what type of error shows up.
>
> --
> Ace
>
> This posting is provided "AS-IS" with no warranties or guarantees and
> confers no rights.
>
> Please reply back to the newsgroup or forum for collaboration benefit
> among responding engineers, and to help others benefit from your
> resolution.
>
> Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
> Microsoft Certified Trainer
>
> For urgent issues, please contact Microsoft PSS directly. Please check
> http://support.microsoft.com for regional support phone numbers.
>

"lenny109" <lenny@newsgroup> wrote in message
news:W66dnWYpmb-iqC7XnZ2dnUVZ8mudnZ2d@newsgroup

> Hi,
> I have the problem back again and this time it is not connecting to Yahoo.
> The site can not be found.
>

Can you provide specific examples of what you're seeing, whether using IE,
ping or nslookup?

If ping or nslookup, copy/paste your results, please, and if IE, what exact
error are you seeing and when IE can't find it, does nslookup find it?

If nslookup can't find it, try changing the server nslookup is using with
the following command (and the example DNS is actually a good DNS you can
ues)"

server 4.2.2.2

Also, do you have ISA installed?

Ace

Sorry I haven't been back in touch. I have managed to sort the problem out
with a number of reboots and ipconfig /flushdns. Although this made no
difference after the first attempt I tried a number of times more and now
everything seems to be working again - or at least has been for a couple of
days.
thanks again.



"Ace Fekay [MCT]" <aceman@newsgroup> wrote in message
news:uLFT57GOKHA.1372@newsgroup

> "lenny109" <lenny@newsgroup> wrote in message
> news:W66dnWYpmb-iqC7XnZ2dnUVZ8mudnZ2d@newsgroup

>> Hi,
>> I have the problem back again and this time it is not connecting to
>> Yahoo. The site can not be found.
>>

>
> Can you provide specific examples of what you're seeing, whether using IE,
> ping or nslookup?
>
> If ping or nslookup, copy/paste your results, please, and if IE, what
> exact error are you seeing and when IE can't find it, does nslookup find
> it?
>
> If nslookup can't find it, try changing the server nslookup is using with
> the following command (and the example DNS is actually a good DNS you can
> ues)"
>
> server 4.2.2.2
>
> Also, do you have ISA installed?
>
> Ace
>

"lenny109" <lenny@newsgroup> wrote in message
news:hOCdnbHUTc1qBCvXnZ2dnUVZ8q2dnZ2d@newsgroup

> Sorry I haven't been back in touch. I have managed to sort the problem out
> with a number of reboots and ipconfig /flushdns. Although this made no
> difference after the first attempt I tried a number of times more and now
> everything seems to be working again - or at least has been for a couple
> of days.
> thanks again.

Lenny,

Please provide an ipconfig /all from the SBS and a sample workstation. I
think we should eliminate basic DNS and other possible issues that the
ipconfig can alert us to. This will allow us to evaluate and if necessary,
make recommendations or suggestions.

Also, do you have a Forwarder configured?

Ace