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  • 1. SMTP et filtrage Quelques bonnes pratiques
  • 2. Le protocole SMTP• Protocole asynchrone• Peu de sécurité• Best effort
  • 3. ZCS et SMTP• Zimbra-MTA• Autonome• Extensible
  • 4. SMTP « out »• Direct ou via relai ?• Filtrage sortant• Gestion des files d’attente• Signature (SPF - DKIM)• Backscatter (BTAV - VERP)
  • 5. SMTP « in »• Direct ou via relai ?• Relai MTA ou appliance ?• Filtrage AntiVirus et AntiSpam• Test de Turing
  • 6. Relai « in »• Subnets - opérateurs - hébergeurs• Sizing• AntiVirus
  • 7. AntiSpam• RBL au niveau SMTP• GreyListing
  • 8. AntiSpam• Bogofilter• SaneSecurity (Phishing & Scam)
  • 9. SpamAssassin• dcc - pyzor - razor - iXhash• RBL et URIBL• Filtre bayesien• Rules of the day & co• SPF - DKIM
  • 10. Intégration• Appliances• SA sur Zimbra MTA• Apprentissage