 4.     SMTP, . 14_______________183

         SMTP-
.       ,    MAIL.
     :

  SEND     .

  SOML (Send Or MaiL),    , -
   ,      ,
     .

  SAML (Send And MaiL)     
(  ),      .

       ,  -
    ,       
:

  TURN       
 (  )    SMTP-
. ,   SMTP ()   TURN 
 ()  "250 OK",     SMTP, a
   SMTP.

TURN <CRLF>

  HELP.        SMTP-
   () .   -
 SMTP     SMTP .
       - , -
       -
 .

HELP [<SP> <string>] <CRLF>

 

   Internet      
.  ,  SMTP-,  
    . SMTP- -
      (  SMTP-
   )  , , -
  .      .

SMTP-        -
   ,    . .  SMTP
      
,       -
 SMTP-.