DavMail Directory support is now available to access Exchange address book through LDAP.
Open Thunderbird address book and choose File/New/LDAP Directory:
Choose a name, host is DavMail host (usually localhost), LDAP base context ou=people, adjust port to your settings and set user to your Exchange account name, either your email address or Active Directory account name, i.e. domain\account. Leave other options to default values.
You may have to use uid= prefix as username to make it look like a valid dn:
uid=accountYou may also want to use this directory for mail completion in compose window :
Proceed to Thunderbird Carddav setup