SYMPTOMS

This error means that the .NET version you have configured for the web mail site producing the error has version 1.1 of the .NET framework running this needs to be changed to version 2.

In older versions pre V3.5 of MailEnable this problem is reversed.  MailEnable web mail and web administration may raise exceptions if versions of the .NET Framework other than v1.1 are configured as the script processor for ASP.NET.

CAUSE

ASP.NET changes between versions and in includes additional security validation routines that may cause ASP.NET specific applications to fail.

RESOLUTION

Versions 3.5 and later

• Run the MEInstaller application (Start->Run->MEInstaller.exe)
• Execute option to configure the ASPX/ASP virtual directories.
• When prompted for the version of the ASP.NET to use select version 2
• Once complete restart IIS for the changes to take effect.

If the above does not help then you may have to change this manually within the properties of the web mail site.

Version Pre 3.5 using ASP.NET

• Run the MEInstaller application and select the option to configure the ASPX/ASP virtual directories.
• When prompted for the version of ASP.NET to use, select version 1.1.
• Once complete restart IIS for the changes to take effect.

WORKAROUND

For the pre 3.5 versions it is possible to workaround this issue by modifying the web.config file associated with NetWebMail and/or NetWebAdmin.

These files are located as follows:

C:\Program Files\Mail Enable\bin\NETWebMail\web.config

C:\Program Files\Mail Enable\bin\NETWebAdmin\Web.config

Locate the following line within the "web.config" file:

<pages validateRequest="false"/>

Insert the following text into the above line:

enableEventValidation="false"

Example: