PMDF System Manager's Guide

Chapter 28
28	Other Channels
28.1	Addressing Channels
28.1.1	Channel Operation
28.1.2	Examples
28.1.3	Setting Up the Channel
28.1.3.1	Adding the Channel to the Configuration File
28.1.3.2	Option Files
28.2	Bitbucket Channel
28.2.1	Configuration
28.3	Defragmentation Channel
28.3.1	Defragmentation Channel Definition and Rewrite Rules
28.3.2	Defragmentation Channel Retention Time
28.4	Pager Channels
28.4.1	Setting Up the Channel
28.4.1.1	Before You Start
28.4.1.2	Adding the Channel to the Configuration File
28.4.1.3	PAGER Mapping
28.4.1.4	Modem Script
28.4.1.5	Option Files
28.4.1.6	Use with PET Switches
28.4.1.7	A Word on Determining Channel Options by Trial and Error
28.4.1.8	Frequent Delivery Retries with the BACKOFF Option
28.4.1.9	Using a Directory Channel to Simplify Pager Addresses
28.4.2	Pager Channel Addresses
28.4.2.1	The Contents of the Attribute-value Pair List (AVPL)
28.4.2.2	Examples of Pager Channel Addresses
28.4.3	Pager Channel Logging
28.4.4	Identifying Troublesome Modems
28.5	Pipe Channels (OpenVMS and UNIX)
28.5.1	Setting Up the Channel
28.5.1.1	Adding the Channel to the Configuration File
28.5.1.2	Profile Database Entries for Pipe Channel Addressees (UNIX only)
28.5.1.3	Pipe Database
28.5.1.4	Option Files
28.5.2	The Order in Which Entries are Checked
28.5.3	Example Usage
28.6	Printer Channels
28.6.1	Setting Up the Channel
28.6.1.1	Adding the Channel to the Configuration File
28.6.1.2	Option Files
28.6.1.3	Controlling the Print Command (UNIX)
28.6.1.4	Handling Multipart Messages
28.6.2	Printer Channel Addresses
28.6.2.1	The Contents of the Attribute-value Pair List, AVPL
28.6.2.2	Quoting the AVPL
28.6.2.3	Examples of Printer Channel Addresses
28.6.3	Logging
28.6.4	A PostScript Printer Channel
28.6.5	Security Considerations
28.6.5.1	Security Considerations on OpenVMS Systems
28.6.5.2	Security Considerations on UNIX Systems
28.7	Processing and Reprocessing Channels
28.7.1	Process Channel Definition and Rewrite Rules
28.7.2	Reprocess Channel Definition and Rewrite Rules
28.8	Generic SMTP Channels
28.9	VAX NOTES Channels (OpenVMS)
28.9.1	Setting Up the NOTES Channel
28.9.2	Using an Option File for the NOTES Channel
28.9.3	Further Control of the Subject Database
Chapter 29
29	The PMDF Queue to E-mail Symbiont (OpenVMS)
29.1	Symbiont Configuration
29.2	Option Files
29.3	Sending Mail with the Symbiont
29.4	Printing Documents from Word Processors
29.4.1	Adding PostScript Support
29.4.2	Character Set Handling
Chapter 30
30	E-mail Firewalls and Other E-mail Security Considerations
30.1	What is an e-mail Firewall?
30.1.1	The e-mail Firewall Orientation
30.2	Preliminary Tasks Before Setting Up an e-mail Firewall
30.2.1	Have an Internet Firewall in Place
30.2.2	Security and e-mail Policies
30.3	The PMDF Firewall Configuration Utility
30.4	Firewall Configuration Features
30.4.1	Separating Message Traffic
30.4.1.1	Separating SMTP Over TCP/IP Message Traffic
30.4.1.1.1	Sample Configuration with Separate TCP/IP Channels
30.4.1.2	The Case of an Internal Mailhub
30.4.1.2.1	Sample Configuration With an Internal Mailhub System
30.4.2	Postmaster Messages
30.4.3	Logging and Tracking Messages and Connections
30.4.3.1	Identifying the Source of Incoming SMTP Messages
30.4.3.2	Logging Messages Passing through PMDF
30.4.3.2.1	Extra Logging Detail
30.4.3.3	Snapshots of Message Traffic through PMDF
30.4.3.4	Monitoring TCP/IP Connections to the Dispatcher
30.4.4	Controlling Address Rewriting and Controlling Message Pathways
30.4.4.1	Sample Configuration Controlling Internal Domain Rewriting
30.4.5	Controlling e-mail Access
30.4.5.1	Staticly Controlling e-mail Access
30.4.5.2	Sidelining Messages for Manual Inspection
30.4.5.3	Dynamically Controlling e-mail Access, and Defending Against Denial of Service Attacks
30.4.6	Controlling External Stimulation of Message Delivery
30.4.7	Controlling e-mail Content and Message Priority
30.4.7.1	Imposing Message Size Limits
30.4.7.2	Message Priority and Size Limits
30.4.7.3	Imposing Message Sensitivity Limits
30.4.7.4	Filtering Based on Message Headers
30.4.7.5	Checking or Filtering Message Content
30.4.7.6	Verifying Message Integrity
30.4.8	Restricting or Controlling Information Emitted
30.4.8.1	Restricting Access to PMDF Information via the PMDF HTTP Server
30.4.8.2	SMTP Probe Commands
30.4.8.3	Internal Names in Received: Headers
30.4.8.4	Centralized Naming and Internal Addresses
30.5	Other Features and Techniques that can Impact an e-mail Firewall
30.5.1	General Performance Issues on an e-mail Firewall
30.5.2	Additional Channel Keywords
30.5.3	Rightslist Identifiers and Group ids
30.5.4	PMDF Options