Server Unabailable under AD sites/services, what does this mean?

When I look in AD sites and services on Server1 (Master server) it shows the status of this DC as "unavailable". I can't see the server even if i look in entire network>domain on any client workstation, I have all my share files located here, and can't map from workstation.

I can, however, see Server2 in directory of domain, just not Server1.

It is DNS and DHCP with master FSMO roles.

Thanks,
PE
pisdadminAsked:
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Darius GhassemConnect With a Mentor Commented:
You need to call your ISP and get the most updated DNS servers from them so you can set them up.


http://www.windowsnetworking.com/articles_tutorials/DNS_Conditional_Forwarding_in_Windows_Server_2003.html
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Darius GhassemCommented:
What errors are you getting on the server? Run a dcdiag and post.
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ComputerTechieCommented:
Did you check the simple things like ethernet cable, nic card?
Can you ping server1?
CT
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merowingerCommented:
disable firewall for testing purpose
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pisdadminAuthor Commented:
Okay.... Yes I did check layer 1 and layer2; I can ping from all clients, both svr1 & svr2; Firewall is disabled on both svrs.

Only get GP errors from our filtration program, don't think that would be an issue though.... Please see attachment.

Thanks-
dcdiag.txt
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Darius GhassemCommented:
Are your servers only pointing to internal DNS servers only? Can you post the Event IDs from your DC that is saying it is unavailable?
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Vince GlissonOwnerCommented:
What is "DerbyAv Group Policy Deployment Helper"?
 
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pisdadminAuthor Commented:
The only thing that shows up in the event log is event 4013 "The DNS server is waiting for Active Directory Domain Services (AD DS) to signal that the initial synchronization of the directory has been completed".  the rest are events 2,3,&4's.

DerbyAv is our Cipafilter which I know is not pointing to the right location, needs to be reconfigured, but I don't think this would be an issue with making the server unavailable.... I could be wrong though.

Please see attachment,
Thanks
DirService.docx
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Darius GhassemCommented:
That is a concern. Do a dcdiag /v then post.
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ComputerTechieCommented:
what happens when you turn off your DerbyTech CipaFilter?
CT
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pisdadminAuthor Commented:
Attached is the dcdiag /v results.

I noticed a farward IP address that is not resolving, could this be the issue - also attached?

Appreciate the help
dcdiagV.docx
IPfoward.docx
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Vince GlissonOwnerCommented:
compare the ip in the forward look up to the ip on the server you can't see.
I believe they should be the same...
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Darius GhassemCommented:
The IP address in DNS forwarders should be your ISP's DNS servers.
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pisdadminAuthor Commented:
If it's not resolving, what do I need to do the get it to resolve?
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pisdadminAuthor Commented:
Called ISP, stated IP is current... Thanks for the info.
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