[zhangyc]

Hi Haqa, with your so detailed explanation, I think I get a little understand LDAP.
But still, I could not get the authentication passed.

I tried four times with different parameter groups, these parameters are not changed through my test:

"LDAP Server" is set "172.29.128.29" (IP address of my AD server),
"LDAP Port" is "389" (Default value),
"Naming Attribute" is set "cn",
"Search Base DN" is set "dc=test,dc=com" (My domain is test.com),
"LDAP Attributes" is always blank,
"Allow Built-in Accounts" is always set "1".

The other fields in the four test groups are:

1. "Anonymous Bind" is set "Yes",
"Bind DN" and "Bind Password" are set blank,
"Disable vBulletin Users" is set "Yes"

When I login with my domain account, it shows "You have entered an invalid username or password. ..."

2. "Anonymous Bind" is set "Yes",
"Bind DN" and "Bind Password" are set blank,
"Disable vBulletin Users" is set "No"

When I login with my domain account, it shows "You have entered an invalid username or password. ..."

3. "Anonymous Bind" is set "No",
"Bind DN" is set "Administrator"
"Bind Password" is set password for account "Administrator" in domain "test.com",
"Disable vBulletin Users" is set "Yes"

When I login with my domain account, it shows "Failed to bind to LDAP directory (Initial bind)"

4. "Anonymous Bind" is set "No",
"Bind DN" is set "Administrator"
"Bind Password" is set password for account "Administrator" in domain "test.com",
"Disable vBulletin Users" is set "No"

When I login with my domain account, it shows "You have entered an invalid username or password. ..."

Could you please tell me that did I get anything wrong for your program? Thank you!