I want to use Thunderbird with Exchange 2007. Before I used Outlook and everything worked fine. Now I set up the following settings in Thunderbird:
Inbox
IMAP
Server Address: 192.168.0.1
Port: 143
SSL: STARTTLS
Authentication: Password, normal
Outbox
SMTP
Server Address: 192.168.0.1
Port: 587
SSL: No
Authentication: No
The user can send and receive emails from inside the organization. Now the user should also send and receive emails outside the organization. If the user tries it he gets Unable to relay
and no message is sent. This is an authentication problem.
How should the Exchange 2007 server be configured?
I tried other settings for the outbox within Thunderbird but they didn't worked. In the Exchange management consonsole I go to server configuration, client access, POP3 and IMAP4, click on the properties of POP3 and I have the following settings:
Binding:
TLS: Port 110
SSL: Port 995
Authentication:
Secure login and the name of the X.509 certificate
Under server configuration, Hub-Transport, properties of the default connector, tab authentication TLS, basic authentication and integrated Windows authentication is checked. Under authorisation group anonym user, exchange user, exchange server and legacy exchange server is checked.