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patrickwilson82
patrickwilson82
New Member
January 2, 2019
Solved

LDAP too many DN's returned by user search

  • January 2, 2019
  • 1 reply
  • 5157 views

Hello,

We have a Fortimail unit that uses LDAP authentication for logging into the webmail for our quaratine folder. When I run an LDAP bind test on mu username and password, it tells me "Too many DNs returned by user search." So far my account is the only one I've ran across this issue on. It sounds like this is an issue with my AD. Any suggestions?

    Best answer by Dirty_Wizard_FTNT

    Try a packet capture on port 389 on the FortiMail (assuming unencrypted) and see what DNs are returned.

    The same mail attribute may be present on multiple users in AD.

    1 reply

    emnoc
    emnoc
    New Member
    January 2, 2019

    Did you do a search with another user? Can you set a filter ? Can you use  a tool like ldap.exe or curl and  search the object and see what's actually being sent ?

     

    Ken Felix

    Dirty_Wizard_FTNT
    Dirty_Wizard_FTNTAnswer
    Staff
    January 2, 2019

    Try a packet capture on port 389 on the FortiMail (assuming unencrypted) and see what DNs are returned.

    The same mail attribute may be present on multiple users in AD.

    patrickwilson82
    patrickwilson82Author
    New Member
    January 2, 2019

    jwilkins wrote:

    Try a packet capture on port 389 on the FortiMail (assuming unencrypted) and see what DNs are returned.

    The same mail attribute may be present on multiple users in AD.

    That was it. I had my email as the mail attribute on more than one account in AD.

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