If we're using External Active Directory LDAP authentication for a certain domain, is there a way to have a different username format and email address format? For instance, our usernames are first_initial+lastname@domain.local, but our email addresses are firstname.lastname@domain.com. Like so:

• User = jappleseed@domain.local
• Email = johnny.appleseed@domain.com
  
  

When I'm trying to establish LDAP authentication in the external LDAP (Active Directory) screen, If specify my BindDN like this:

• OU=Mobile,OU=Users,DC=domain,DC=local
  
  

... then the user logs in with their email address, and it doesn't match their username, so it fails authentication:

• login: johnny.appleseed@domain.com != jappleseed@domain.local

If I follow what some of the other forum posts suggest and I change the DN to %u@domain.local, ie:

zextras@mail:~$carbonio prov modifyDomain domain.com zimbraAuthLdapBindDn %u@domain.local

Then have the user try to log in as "jappleseed", this happens:

• jappleseed@domain.local != johnny.appleseed@domain.com

I even tried getting a little fancier, and tried this as a BindDN:

• BindDN: OU=Mobile,OU=Users,DC=domain,DC=local
• Filter: (mail=%n)

I'm sure there's some way to make this work. Anyone able to help?

Thanks!