Pb sending mail

Hello !

(Sorry for my very bad english )

I'm trying to send mail from Project'or RIA : sending status is ok but no mail in my mailbox...

Read other threads from here but no results....

In configuration file, I set :

[Version : 1.8.1 / CentOs 6 on nGinx Web server]

$paramMailSender = 'Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.';
$paramMailReplyTo = 'Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.';
$paramAdminMail = 'Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.';
$paramMailSmtpServer = 'smtp.bbox.fr';
$paramMailSmtpPort = '25';
$paramMailSendmailPath = '';

When I try to sending mail (ex: identification to user), I see in 'Outils\Emails envoyés' status=OK but I never receive the mail...

When trying to send mail from command line with "Telnet" with these params (smtp.bbox.fr / port 25), I got it...

Can someone help me please ?

Thanks.