    
/*
 * --------------------------------------------------------------
 *
 *     c "" 
 *
 * --------------------------------------------------------------
 */

    1. 

      ""    ,  
  .      
,    .    
   ,      
(    ).

    ,    #,    ,
   .      
 :

[version=NN]

  ,      NN- .  
 ,  ,      1- .

          (  )
     (     ). 
   - ,   .  
   - ,     
    .

    2.   2

            
...

     - { allow | deny } (..   allow,  deny).
 allow ,  ,   , 
 , deny -     .
     - { from | to | any }.  from ,  
,      , 
 to -    ,    any 
   .
     - { exact | subst }     .
 exact ,       ,
    .  subst ,  
   ,      .
:     .
     - ,    ,    
  ,   .

    3.   1 ()

    

       .   1- 
     2-  :
    any     subst   

    4. FAQ

Q:    allow,         ?
A:  ,      . :

allow   any   exact     someuser@any.domain.com
deny    any   subst     @any.domain.com

    someuser   any.domain.com  ,
       .
