The Firstwave » SBS 2008

Keep losing the gateway on SBS 2008

Mark — Mon, 22 Aug 2011 13:13:29 +0000

I noticed recently when one of our sbs 2008 servers got rebooted the gateway would disappear, the first time it happened i thought nothing of it I just ran the fix my network wizard and that sorted it but the next time it rebooted it disappeared again, it turns out its a known issue i found the answer on the SBS Blog

1. To fix the issue go to the TCP/IP properties of the network card and enter in the proper default gateway.

2. Download the hotfix and install to stop it happening again

3. Manually edit the registry to remove the extra spaces in the following location HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Para
meters\Interfaces\\DefaultGateway

The guid is the interface for the network card if you have one there will be one entry if you have two network cards there will be two entries.

3. Double click the value for DefaultGateway and remove the blank lines above and below the gateway address and click ok.

4. Reboot server if needed.

Outlook continually asking for authentication on sbs2008 netwok

Mark — Wed, 22 Sep 2010 12:25:04 +0000

I recently had an issue where outlook in our case 2007 was continually popping up the the password prompt but wouldn’t accept the password, but emails where still coming through.
After much head scratching checking dns records and authentication settings I installed the sbs 2008 update rollup 4 and after the server rebooted the problem was solved.

Accessing Companyweb from the Server Itself after 963027 or Windows 2008 SP 2

Mark — Wed, 26 Aug 2009 09:57:36 +0000

I came across an issue on SBS 2003 and SBS 2008 accessing http://companyweb on the server, after installing the cumulative security update for Internet Explorer (963027 or 969897) or Internet Explorer 8.0 or Windows Server 2008 Service Pack 2.

To fix the problem

SBS2003

On an SBS 2003 server this issue can be fixed by applying update KB961143.

Note: You must have .NET Framework 2.0 installed before you apply this update.

SBS2008

On an SBS 2008 server this issue can be fixed by applying SBS 2008 Update Rollup 2 (960911). This update is now available on Microsoft Update and WSUS.

Or you can use this method KB963027

Cannot resolve names in top level domains like .co.uk

Mark — Wed, 26 Aug 2009 08:53:49 +0000

I came across this the other day when trying to access a site that was in the top level domain .it, at first i just thought the site was down as other sites where working OK, but the site worked if I used my laptop which was accessing the net via 3g therefore different DNS servers, i then came across this article after a bit of searching KB968372

Essentially what happens is when the DNS server saves the NS record the TTL (Time To Live) for the A record is changed to be 1 day, But TTL for the NS Record stays at 2 days. When the A record expires the DNS server starts returning SERVFAIL therefore it wont display the website.

Workarounds include restarting DNS, clearing the DNS cache, using DNS forwarders instead of root hints and setting maxcachettl to 2 days or greater, i wanted root hints to work correctly to stop ant problems with the isp DNS servers affecting our internet so i altered the maxcachettl settings.

1. Start Registry Editor (regedit.exe).

2. Locate the following registry key:

3. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters

4. On the Edit menu, click New, click DWORD (32-bit) Value, and then add the following value:

Value: MaxCacheTTL
Data Type: DWORD
Data value: 0x2A300 (172800 seconds in decimal, or 2 days)

5. Click OK.

6. Quit Registry Editor.

7. Restart the DNS Server service.