В настройках LDAP указать:
Закладка "Основное"
Название: LDAP (Произвольное)
Имя сервера: fs.bitza.lan
Корневой элемент (Base DN): OU=DomainUsers,DC=bitza,DC=lan
Порт: 3268
Имя пользователя (Bind DN): bitza\ars
Закладка "Дополнительно"
(&(objectClass=User)(mail=*))


Configure LDAP Attribute Mappings:

  1. Windows: From the Tools menu, select Options
    Macintosh: From the Thunderbird menu, select Preferences
  2. Click Advanced
  3. Select the General tab, and click the Config Editor button.
  4. In the Filter entry box type: default.att
    This will display all the LDAP attributes that Thunderbird uses, and the attribute name Thunderbird expects an LDAP server to return. ldap edit page
  5. For each of the following attributes double-click the entry and edit the entry so that it matches one of the attributes from above.
    Thunderbird attribute ending with
    Edit entry to read
    Company o,company
    Department wiscedudepartment,department,departmentnumber,orgunit,ou
    HomeAddress homePostalAddress,mozillaHomeStreet
    JobTitle wiscedualltitles,title
    NickName edupersonnickname,mozillaNickname,xmozillanickname
    WebPage1 labeledUri,mozillaWorkUrl,workurl
    WorkAddress postaladdress,street,streetaddress,postOfficeBox
    WorkCountry c,countryname
    WorkPhone  telephoneNumber
    Optional Entries
    		  
    SecondEmail mailRoutingAddress,mozillaSecondEmail,xmozillasecondemail
    Custom1 mozillaCustom1,custom1
  1. Close the About:config dialog box.
  2. Click OK to close the Options dialog box.