Agile Sharepoint development by 21apps and Andrew Woodward MVP

I have to hold my hands up to recently getting my AAM settings wrong..  thanks to fellow MVP Shane Young for pointing out my obvious errors.  

Alternative Access Mappings (AAM) provide a way to serve the same SharePoint content using more than one URL.   This is often the case when you are using ISA Server 2006 to reverse proxy the SharePoint web application to the Internet; for example

https://www.mysharepointsite.com is mapped via ISA server to the machine and port hosting the application  http://mymossfarm:1234

Within the AAM settings you need to ensure that SharePoint can map  the url http://mymossfarm:1234 to https://www.mysharepointsite.com so that all urls and links are correctly rendered for the end user.

Rather than provide you with details on how to do this I will  point you to what is the regarded as the definitive resource (now packaged up as a TechNet article).

http://technet2.microsoft.com/windowsserver/WSS/en/library/c8ccffce-5162-46af-a3ef-1d7914e8efee1033.mspx?mfr=true

It is also worth checking that the ISA configuration is consistent with those in SharePoint.

Errors that indicate AAM may not be setup correctly

SharePoint works when accessing it directly from the box, however when accessing through ISA you may see the following

• Content Query Web Part cannot render the content
• Unable to perform searches
• Unable to add Web Parts

The server will record “Object not set to an instance of an object” errors.

This entry was posted on Monday, August 27th, 2007 at 5:20 pm and is filed under SharePoint. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.