Tag Archives: “DNS Server”

Microsoft, SBS 2008, SBS 2011, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 2, Service Pack 2, Service Pack 2, Service Pack 2, Service Pack 3, Service Pack 3, Small Business Server 2008, Small Business Server 2011, Windows, Windows 2000, Windows 7, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP, XP Mode

Microsoft Windows Server 2008 and Microsoft Windows Server 2008 R2 DNS Server may stop responding to DNS queries and requests from client computers

Microsoft Windows Server 2008 and Microsoft Windows Server 2008 R2 DNS Server may stop responding to DNS queries and requests from client computers, this issue may occur randomly and when it is occuring the DNS Server stops responding.

This issue occurs because the DNS Server goes into an infinite loop, more information about this issue and a hotfix to address the issue is provided in Microsoft KB 2655960 http://support.microsoft.com/kb/2655960

Exchange, Exchange 2007, Exchange 2010, Microsoft, Office, Outlook 2010, Outlook Web Access, OWA, SBS 2011, Small Business Server 2011, Windows, Windows Server 2008 R2

Windows Server 2008 R2 – RTM and SP1 may not respond to a request for a Sender Policy Framework (SPF) TXT Record Correctly if it exceeds 512 bytes

In this scenario if the Sender Policy Framework TXT record exceeds 512 bytes in size then you may find your server anti-spam fails to correctly identify e-mail as either legitimate mail or SPAM, this can result in the two extremes of SPAM mail being delivered to users or legitimate e-mail being rejected as SPAM.

Microsoft do offer a hotfix for DNS Server to prevent this issue KB 2495375 http://support.microsoft.com/kb/2495375