Upn (userPrincipalName) login on AD through ldap

Hello,

I am trying to use userPrincipalName (ie pdupont@acme.com for example) instead of samAccountName to log with Spark on my Wildfire Server.

Problem is that since the user name contains an “@”, it is not working (I think this is because it mismatches it with a jabber Id xx@xxx.xx)

Do you have any clue on how to do it to have a single login ?

Thanks