Queued mail for delivery using SMTP server relay

Hi,

I need to have an application sending emails so I tried to set up a smtp server relay. I am facing a "Queued mail for delivery" issue.

I followed the procedure here http://support.microsoft.com/kb/2600912/en-us

Once I got the relay configured I tested it through a telnet connection :

> telnet myhost myport

Then I tried to send a test mail manually:

250 2.6.0 <myhostSA1X00000006@myhost> Queued mail for delivery

Any advice ?

Thanks,

Sébastien