Évidemment, chacun des domaines sur lesquels vous allez faire de la livraison de courriel peut avoir des configurations différentes. Toutefois, la plupart d'entre eux vont suivre la logique suivante :

 

Il faut remplacer le X par un 4 ou un 5 dans la liste.

  • X.1.0 Other address status
  • X.1.1 Bad destination mailbox address
  • X.2.0 Bad destination system address
  • X.1.3 Bad destination mailbox address syntax
  • X.1.4 Destination mailbox address ambiguous
  • X.1.5 Destination mailbox address valid
  • X.1.6 Mailbox has moved
  • X.1.7 Bad sender's mailbox address syntax
  • X.1.8 Bad sender's system address
  • X.2.0 Other or undefined mailbox status
  • X.2.1 Mailbox disabled, not accepting messages
  • X.2.2 Mailbox full
  • X.2.3 Message length exceeds administrative limit.
  • X.2.4 Mailing list expansion problem
  • X.3.0 Other or undefined mail system status
  • X.3.1 Mail system full
  • X.3.2 System not accepting network messages
  • X.3.3 System not capable of selected features
  • X.3.4 Message too big for system
  • X.4.0 Other or undefined network or routing status
  • X.4.1 No answer from host
  • X.4.2 Bad connection
  • X.4.3 Routing server failure
  • X.4.4 Unable to route
  • X.4.5 Network congestion
  • X.4.6 Routing loop detected
  • X.4.7 Delivery time expired
  • X.5.0 Other or undefined protocol status
  • X.5.1 Invalid command
  • X.5.2 Syntax error
  • X.5.3 Too many recipients
  • X.5.4 Invalid command arguments
  • X.5.5 Wrong protocol version
  • X.6.0 Other or undefined media error
  • X.6.1 Media not supported
  • X.6.2 Conversion required and prohibited
  • X.6.3 Conversion required but not supported
  • X.6.4 Conversion with loss performed
  • X.6.5 Conversion failed
  • X.7.0 Other or undefined security status
  • X.7.1 Delivery not authorized, message refused
  • X.7.2 Mailing list expansion prohibited
  • X.7.3 Security conversion required but not possible
  • X.7.4 Security features not supported
  • X.7.5 Cryptographic failure
  • X.7.6 Cryptographic algorithm not supported
  • X.7.7 Message integrity failure