 5.     NNTP______________________219

 NNTP,  

  UseNet   NNTP   
 .    NNTP    
    SMTP.    -
        
 .      
TCP,  NNTP,  ,    119.

      ASCII-.  
  8- ,  ()  -
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<CRLF>      512 .

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   , ,  RFC-977.

,      TCP-   -
,        NNTP (
 "S"    ,   ""  ).
:

S: 200 newsvax news server ready  posting ok

 200 ,        -
 .     201,     
   :

S: 201 badvax netnews server ready -- no posting allowed

    .     -
     NNTP.

  LIST       -
 . :

: LIST
S: 215 list of newsgroups follows