The LDAP address book is searched as soon as you enter a value into the To, CC or BCC fields.
Now all the addresses are displayed that start with the letter R.
Now, all the addresses are displayed, that begin with these two letters.
In Mozilla Thunderbird you can use the automatic address completion function if you have activated it.
On Tools menu, click Settings.
The Settings window opens.
If you now write a new e-mail, the e-mail address is automatically completed while you are entering it as long as it is already in the address book. Whenever there are multiple hits you can select the correct e-mail address from a drop-down list.