Mail Relaying
Up until now, we've mostly considered Postfix in its role as the end node for email messages. That is, messages that arrive at the Postfix system are, for the most part, delivered to the local system. But it's also common to find Postfix serving as an intermediate node on the path a message follows to its ultimate destination. In this chapter we'll look at some of the configuration options for Postfix as a client in MTA-to-MTA communications.
Introduction
- Introduction
- Postfix Origins and Philosophy
- Email and the Internet
- The Role of Postfix
- Postfix Security
- Additional Information and How to Obtain Postfix
Prerequisites
Postfix Architecture
- Postfix Architecture
- Postfix Components
- How Messages Enter the Postfix System
- The Postfix Queue
- Mail Delivery
- Tracing a Message Through Postfix
General Configuration and Administration
- General Configuration and Administration
- Starting Postfix the First Time
- Configuration Files
- Important Configuration Considerations
- Administration
- master.cf
- Receiving Limits
- Rewriting Addresses
- chroot
- Documentation
Queue Management
Email and DNS
Local Delivery and POP/IMAP
- Local Delivery and POP/IMAP
- Postfix Delivery Transports
- Message Store Formats
- Local Delivery
- POP and IMAP
- Local Mail Transfer Protocol
Hosting Multiple Domains
- Hosting Multiple Domains
- Shared Domains with System Accounts
- Separate Domains with System Accounts
- Separate Domains with Virtual Accounts
- Separate Message Store
- Delivery to Commands
Mail Relaying
- Mail Relaying
- Backup MX
- Transport Maps
- Inbound Mail Gateway
- Outbound Mail Relay
- UUCP, Fax, and Other Deliveries
Mailing Lists
Blocking Unsolicited Bulk Email
- Blocking Unsolicited Bulk Email
- The Nature of Spam
- The Problem of Spam
- Open Relays
- Spam Detection
- Anti-Spam Actions
- Postfix Configuration
- Client-Detection Rules
- Strict Syntax Parameters
- Content-Checking
- Customized Restriction Classes
- Postfix Anti-Spam Example
SASL Authentication
- SASL Authentication
- SASL Overview
- Postfix and SASL
- Configuring Postfix for SASL
- Testing Your Authentication Configuration
- SMTP Client Authentication
Transport Layer Security
Content Filtering
External Databases
Appendix A. Configuration Parameters
Appendix B. Postfix Commands
Appendix C. Compiling and Installing Postfix
- Appendix C. Compiling and Installing Postfix
- C.1. Obtaining Postfix
- C.2. Postfix Compiling Primer
- C.3. Building Postfix
- C.4. Installation
- C.5. Compiling Add-on Packages
- C.6. Common Problems
- C.7. Wrapping Things Up
Appendix D. Frequently Asked Questions
EAN: 2147483647
Pages: 130
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