Mail Administration Guide
    
R
 
 -R argument (sendmail program) ( Index Term Link )
 
 read timeouts ( Index Term Link )
 
 recipients
  See also multiple recipients
  selecting ( Index Term Link )
  verifying ( Index Term Link )
 
 relay-domains file, described ( Index Term Link )
 
 relay hosts
  See mail hosts
 
 relay mailers
  See mailers
 
 remote mail configuration ( Index Term Link ) ( Index Term Link )
 
 remote mode, mail clients in ( Index Term Link )
 
 -request suffix, mailbox names ( Index Term Link )
 
 returned messages
  See undelivered messages
 
 rewriting rules
  See addresses, rewriting rules
 
 rmail program ( Index Term Link )
 
 root alias
  NIS ( Index Term Link )
  /etc/mail/aliases file ( Index Term Link )
 
 route-based addressing ( Index Term Link )
 
 route-independent addressing ( Index Term Link )
 
 routers
  See also sendmail program
 
 routing
  explained ( Index Term Link ) ( Index Term Link )
  local addresses and ( Index Term Link )
 
 rules sets
  See addresses, rewriting rules