Database mail queue stays INACTIVE

Hello

I tried for hours to get my notifications working, without success, on SQL Server 2008R2 Web Edition 64b

I send mail with the test :

USE msdb

EXEC sp_send_dbmail @profile_name='ARRIERE',@recipients='mai@mail.tld',

@subject='Bonjour ',@body='Congrates Database Mail Received By you Successfully.'

But this mail seems to be never sent.

With:

EXEC msdb.dbo.sysmail_help_queue_sp @queue_type = 'mail';

The queue state is always INACTIVE, and length is growing everytime I send a email.

I tried to restart the mail system some times :

EXEC msdb.dbo.sysmail_stop_sp;
EXEC msdb.dbo.sysmail_start_sp;

The states goes RECEIVE OCURRING, but after some seconds and without intervention, it goes back to INACTIVE.

I tried to rester SQL Agent, SQL Server, the server himself, but no luck.

The broker is activated (SELECT is_broker_enabled FROM sys.databases WHERE name = 'msdb' ;)

I disabled every firewall, antivirus and others (by the way, I can do "telnet smtp.domain.tld 25" and send a mail with telnet.

With

SELECT * FROM msdb.dbo.sysmail_allitems;

I see all my mails with state "unsent".

Nothing logged in Event Viewer, SQL Events, and in sysmail_event_log I only get "Activation successful".

I cleaned the mails with:

DECLARE @GETDATE datetime
SET @GETDATE = GETDATE()
EXECUTE msdb.dbo.sysmail_delete_mailitems_sp @sent_before = @GETDATE;
GO

=> Nothing more.

Can I do something more?

Thans for your help.

Regards