       
 ""    ),    
DNSBL  (       )

     ,  ,  
   .

     ,    
      .
        ,    
 .       
   ,    
     .  
           
       
          
RFC 822.       , 
  .

       ,  
 ,        
,   HTML'       .

    (     
)    ,     
  (     )         (
   DNSBL).    ""   
, ,        
    email .

         
,     (: "u!s!e!r [ t#e#s#t ]  "),  
 ,      .    
 email   usenet.  ,   
email  JavaScript,         
  .

       
 email      .
    ,      
  (MS IE)       
 ,      .  
    ,   dns  
    ,        
        
    .

  -  :      
  ,      , 
       .
        HTML ,
       -    .



