Active Directory formsauthentication connectionstring GC

[Gert Albertse]

Is it possible to use formsauthentication against Active Directory
where the connectionstring queries the GC. I get the following error
message:

LDAP connections on the GC port are not supported against Active
Directory

web.config

<configuration>
<connectionStrings>
<add name="GCConnectionString" connectionString="LDAP://
dc1.domain.com:3269" />
</connectionStrings>

<add name="MembershipADProvider"
type="System.Web.Security.ActiveDirectoryMembershipProvider,
System.Web, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a"