PMDF System Manager's Guide

Chapter 27
27	Other Channels
27.1	Addressing Channels
27.1.1	Channel Operation
27.1.2	Examples
27.1.3	Setting Up the Channel
27.1.3.1	Adding the Channel to the Configuration File
27.1.3.2	Option Files
27.2	Bitbucket Channel
27.2.1	Configuration
27.3	Defragmentation Channel
27.3.1	Defragmentation Channel Definition and Rewrite Rules
27.3.2	Defragmentation Channel Retention Time
27.4	Pager Channels
27.4.1	Setting Up the Channel
27.4.1.1	Before You Start
27.4.1.2	Adding the Channel to the Configuration File
27.4.1.3	PAGER Mapping
27.4.1.4	Modem Script
27.4.1.5	Option Files
27.4.1.6	Use with PET Switches
27.4.1.7	A Word on Determining Channel Options by Trial and Error
27.4.1.8	Frequent Delivery Retries with the BACKOFF Option
27.4.1.9	Using a Directory Channel to Simplify Pager Addresses
27.4.2	Pager Channel Addresses
27.4.2.1	The Contents of the Attribute-value Pair List (AVPL)
27.4.2.2	Examples of Pager Channel Addresses
27.4.3	Pager Channel Logging
27.4.4	Identifying Troublesome Modems
27.5	Pipe Channels (OpenVMS and UNIX)
27.5.1	Setting Up the Channel
27.5.1.1	Adding the Channel to the Configuration File
27.5.1.2	Profile Database Entries for Pipe Channel Addressees (UNIX only)
27.5.1.3	Pipe Database
27.5.1.4	Option Files
27.5.2	The Order in Which Entries are Checked
27.5.3	Example Usage
27.6	Printer Channels
27.6.1	Setting Up the Channel
27.6.1.1	Adding the Channel to the Configuration File
27.6.1.2	Option Files
27.6.1.3	Controlling the Print Command (UNIX)
27.6.1.4	Handling Multipart Messages
27.6.2	Printer Channel Addresses
27.6.2.1	The Contents of the Attribute-value Pair List, AVPL
27.6.2.2	Quoting the AVPL
27.6.2.3	Examples of Printer Channel Addresses
27.6.3	Logging
27.6.4	A PostScript Printer Channel
27.6.5	Security Considerations
27.6.5.1	Security Considerations on OpenVMS Systems
27.6.5.2	Security Considerations on UNIX Systems
27.7	Processing and Reprocessing Channels
27.7.1	Process Channel Definition and Rewrite Rules
27.7.2	Reprocess Channel Definition and Rewrite Rules
27.8	Generic SMTP Channels
27.9	VAX NOTES Channels (OpenVMS)
27.9.1	Setting Up the NOTES Channel
27.9.2	Using an Option File for the NOTES Channel
27.9.3	Further Control of the Subject Database
Chapter 28
28	The PMDF Queue to E-mail Symbiont (OpenVMS)
28.1	Symbiont Configuration
28.2	Option Files
28.3	Sending Mail with the Symbiont
28.4	Printing Documents from Word Processors
28.4.1	Adding PostScript Support
28.4.2	Character Set Handling
Chapter 29
29	E-mail Firewalls and Other E-mail Security Considerations
29.1	What is an e-mail Firewall?
29.1.1	The e-mail Firewall Orientation
29.2	Preliminary Tasks Before Setting Up an e-mail Firewall
29.2.1	Have an Internet Firewall in Place
29.2.2	Security and e-mail Policies
29.3	The PMDF Firewall Configuration Utility
29.4	Firewall Configuration Features
29.4.1	Separating Message Traffic
29.4.1.1	Separating SMTP Over TCP/IP Message Traffic
29.4.1.1.1	Sample Configuration with Separate TCP/IP Channels
29.4.1.2	The Case of an Internal Mailhub
29.4.1.2.1	Sample Configuration With an Internal Mailhub System
29.4.2	Postmaster Messages
29.4.3	Logging and Tracking Messages and Connections
29.4.3.1	Identifying the Source of Incoming SMTP Messages
29.4.3.2	Logging Messages Passing through PMDF
29.4.3.2.1	Extra Logging Detail
29.4.3.3	Snapshots of Message Traffic through PMDF
29.4.3.4	Monitoring TCP/IP Connections to the Dispatcher
29.4.4	Controlling Address Rewriting and Controlling Message Pathways
29.4.4.1	Sample Configuration Controlling Internal Domain Rewriting
29.4.5	Controlling e-mail Access
29.4.5.1	Staticly Controlling e-mail Access
29.4.5.2	Sidelining Messages for Manual Inspection
29.4.5.3	Dynamically Controlling e-mail Access, and Defending Against Denial of Service Attacks
29.4.6	Controlling External Stimulation of Message Delivery
29.4.7	Controlling e-mail Content and Message Priority
29.4.7.1	Imposing Message Size Limits
29.4.7.2	Message Priority and Size Limits
29.4.7.3	Imposing Message Sensitivity Limits
29.4.7.4	Filtering Based on Message Headers
29.4.7.5	Checking or Filtering Message Content
29.4.7.6	Verifying Message Integrity
29.4.8	Restricting or Controlling Information Emitted
29.4.8.1	Restricting Access to PMDF Information via the PMDF HTTP Server
29.4.8.2	SMTP Probe Commands
29.4.8.3	Internal Names in Received: Headers
29.4.8.4	Centralized Naming and Internal Addresses
29.5	Other Features and Techniques that can Impact an e-mail Firewall
29.5.1	General Performance Issues on an e-mail Firewall
29.5.2	Additional Channel Keywords
29.5.3	Rightslist Identifiers and Group ids
29.5.4	PMDF Options