Impossible to send mail with thunderbird

Impossible to send mail with thunderbird

Hi,

I can't send mail with thunderbird (or Mail app of Mac OS X).
I use this parameters in Thunderbird :

- IMAP : imap.zoho.com
- SSL : SSL/TLS
- Port : 993
- Authentication : Normal Password

- SMTP : smtp.zoho.com
- SSL : SSL/TLS
- Port : 465
- Authentication : Normal Password

I try send an email, but after few minutes I have this message in Frennch : "L'envoi du message a échoué.
Le message n'a pas pu être envoyé car la connexion au serveur SMTP « smtp.zoho.com » a expiré. Essayez à nouveau ou contactez votre administrateur réseau."

In English : "Sending of message failed.
The message could not be sent because connecting to SMTP "smtp.zoho.com" server has expired. Try again or contact your network administrator"

What's the problem?

Thanks,

PS : Sorry for my bad english