Un exemple de session SMTP :
220 <serveur SMTP> ESMTP Sendmail ...
HELO <domaine du client SMTP>
250 <serveur SMTP> Hello pleased to meet you
MAIL FROM: Zorro@hacienda.monterey.us
250 Zorro@hacienda.monterey.us... Sender ok
RCPT TO: Xavier.Redon@eudil.fr
250 Recipient ok
DATA
354 Enter mail, end with "." on a line by itself
Je tiens a vous dire que j'ai prevenu l'ISO de
votre manque de respect envers le modele OSI.
Zorro
.
250 PAA27560 Message accepted for delivery
QUIT
221 <serveur SMTP> closing connection