Contents

• Contents
• Introduction
• Multiplexing SMTP
  • Mail Exchanger Records
  • Splitting Incoming Email
  • Rule Based Multiplexing
  • Per-User Map Multiplexing
  • Hybrid Multiplexing
• Single Layer SMTP Multiplexing
  • Using Round-Robin DNS
  • Using Layer 4 Switching
  • Analysis
• Double Layer SMTP Multiplexing
  • Analysis
• Multiplexing POP3 and IMAP4
  • Pop Map
  • Single Layer Mail Retrieval Multiplexing
  • Double Layer Mail Retrieval Multiplexing
• Multiplexing Other Protocols
• Mailbox Migration
  • Measuring Mail Server Utilisation
  • Selecting Mailboxes for Migration
  • Relocating a Mailbox
• Conclusion
• Bibliography