lib/alias.dtl

   1 {{E-mail aliases (AKA, redirects)}}
   2
   3 extern type emailUser;
   4 {{A valid username to appear before the "@" in an e-mail address}}
   5
   6 extern type email;
   7 {{A valid e-mail address.
   8   It may also be a username only, in which case it is interpreted as a local
   9   user's mailbox.}}
  10
  11 extern type aliasSource;
  12 {{An e-mail recipient whose mail you want to redirect}}
  13 extern val userSource : emailUser -> aliasSource;
  14 {{The part appear before the "@" in your desired source address}}
  15 extern val defaultSource : aliasSource;
  16 {{Matches any mail to this domain that doesn't match any other rule.}}
  17
  18 extern type aliasTarget;
  19 {{A place to redirect messages}}
  20 extern val addressTarget : email -> aliasTarget;
  21 {{Redirect to this e-mail address.}}
  22 extern val addressesTarget : [email] -> aliasTarget;
  23 {{Redirect to all of these addresses.}}
  24 extern val dropTarget : aliasTarget;
  25 {{Silently delete all mail to the associated source.}}
  26
  27 extern val aliasPrim : aliasSource -> aliasTarget -> [Domain] {MailNodes: [mail_node]};
  28 {{Request redirection of all mail from the source to the target, specifying on
  29   which nodes this redirection should be applied.}}
  30
  31 val emailAlias = \user -> \email -> aliasPrim (userSource user) (addressTarget email);
  32 {{Redirect mail for the user at the current domain to the e-mail address.}}
  33 val aliasMulti = \user -> \emails -> aliasPrim (userSource user) (addressesTarget emails);
  34 {{Redirect mail for the user at the current domain to all of the e-mail
  35   addresses listed.}}
  36 val aliasDrop = \user -> aliasPrim (userSource user) dropTarget;
  37 {{Silently delete mail to the user at the current domain.}}
  38
  39 val defaultAlias = \email -> aliasPrim defaultSource (addressTarget email);
  40 {{When a message to the current domain doesn't match any other rule, send it to
  41   this e-mail address.}}
  42 val defaultAliasDrop = aliasPrim defaultSource dropTarget;
  43 {{Silently drop all mail not matching a specific rule.}}