Mail and Messaging Guide

Table of Contents

• About this book
  • How this book is organized
  • Related documentation
  • Typographical conventions
  • How can we improve this book?
• Chapter 1: Using and administering electronic mail
  • Mail User Agents
  • Mail Transfer Agents
    • Comparison of sendmail with MMDF
    • Changing Mail Transfer Agents
  • MMDF interoperability
  • POP3 and IMAP4 servers
    • Using the POP server
  • MMDF configuration and administration managers
  • MIME conformance
  • User configurable timeout
• Chapter 2: Using e-mail
  • Starting and quitting mail
  • Reading mail
  • Replying to a message
  • Forwarding a message to another user
  • Creating and sending a message
  • Sending mail from the command line
  • Editing a message's header
  • Editing a message
  • Including a file or a message in mail
  • Canceling a message
  • Addressing mail to users on other systems
  • Saving a message
  • Printing a message
  • Deleting a message
  • Restoring a message
  • Sending a message to a list of people using an alias
  • Attaching a signature to your messages
  • Adding your real name to the message header
  • Organizing your mail into folders
  • Working with attachments and large files
    • Reading an attachment
    • Sending large files via mail
    • Running UNIX commands from within mail
  • Customizing mail
    • Making mail execute commands at startup
    • Automatic notification of new mail
    • Redirecting incoming messages to other folders
    • Sending automatic responses when on vacation
    • Forwarding your messages automatically
  • More about mail
  • Other ways of contacting users
    • Holding conversations using talk
    • Preventing someone from writing a message to you
• Chapter 3: Using SCO Shell Mail
  • Starting mail
  • Quitting from mail
  • Getting help when you are using e-mail
  • Reading mail
  • Replying to a message
  • Forwarding a message to another user
  • Saving a message
  • Deleting a message
  • Printing a message
  • Viewing the history of a message
  • Organizing your mail
  • Listing specified mail messages
  • Changing the format of the message list
  • Creating and sending a message
  • Editing a message's address before sending the message
  • Editing a message before you send it
  • Canceling a message before you send it
  • Holding a message for delivery at a later time
  • Delaying the delivery of a message
  • Retrieving a delayed message
  • Saving the messages you send
  • Including a file or a message in mail
  • Including information from other applications in a message
  • Attaching a file to a message
  • Sending a message to a list of people
  • Verifying the delivery address before sending the message
  • Attaching a signature to your messages
  • Including your real name in the message header
  • Running UNIX commands from within SCO Shell Mail
  • Sending large files via mail
  • Sending mail to other computers
• Chapter 4: Managing mail with MMDF
  • How to start a Mail manager
    • Problems with SCOadmin Mail Managers
  • Running the MMDF Configuration Manager
    • MMDF configuration information
    • Unsupported configurations
  • Testing MMDF configuration
    • Checking for MMDF problems
    • Testing mail addresses
  • Adding or removing a mail user
    • Adding or removing a user from system-wide aliases
    • Redirecting mail to another user
    • Removing or moving a retired mailbox
  • Managing mail hosts
    • Adding or removing a mail host
    • Changing a remote host name
  • Managing mail aliases and lists
    • Adding or removing a mail alias
    • Adding or removing an alias member
    • Searching an alias or mailing list
    • Maintaining mailing lists
    • The postmaster address
    • Associating users with a home machine
  • Managing mail channels
    • Adding channels
    • Removing a channel
    • Modifying channel parameters
    • Channel configuration strings
    • Routing mail for unrecognized hosts
    • Routing mail for unrecognized users
    • About mail channels
    • Channel programs
  • Managing mail domains
    • Adding or removing a domain
    • Modifying domain parameters
    • Domain names
    • Registering domain names
  • Mail addressing and delivery
    • Referencing addresses maintained in a file
    • Customizing mail delivery
    • Specifying the MMDF ``signature''
    • Forwarding mail from one account to another
    • Changing the system name
  • How MMDF works
    • Processing incoming mail
    • Processing outgoing mail
    • How MMDF routes mail
    • Searching MMDF domain tables
  • MMDF configuration files
    • Modifying MMDF table parameters
    • Domain tables
    • Channel tables
    • Alias and mailing list tables
    • Assigning Mail IDs
    • The mmdftailor file
    • Editing MMDF configuration files manually
    • Mail headers
    • Mailbox locking
  • Specifying MMDF authorizations
    • Specifying host-based authorization
    • Specifying user-based authorization
    • Setting routing-based authorization
    • Specifying both host and user authorization
    • Specifying channel authorization levels
    • Changing error logging levels
    • Authorization log files
  • Troubleshooting MMDF
    • Failed mail error
    • Mail does not work, no returned mail
    • Unable to reply to mail from a Micnet host
    • Mail command hangs
    • Mailbox locking problems
    • Undelivered messages in /usr/spool/mmdf/lock/home
    • Using name server resource records with MMDF
    • Mail-related name server resource records
    • MMDF delivers mail twice or not at all
    • Smtp cannot establish a remote connection
    • UUCP channel delays mail delivery
    • Message not deliverable
  • Example MMDF configurations over TCP/IP
    • Setting up MMDF on a TCP/IP network
    • Setting up MMDF using a mail gateway
    • Setting up MMDF over TCP/IP with a UUCP Internet gateway
• Chapter 5: sendmail administration
  • How sendmail works
    • Outgoing mail
    • Incoming mail
    • sendmail execution
    • sendmail interfaces
    • Mail to files and programs
  • Standard sendmail configuration
    • Running mkdev cf
    • Editing the daemon invocation
    • Running and testing sendmail
  • Tuning sendmail configuration
    • Changing the queue processing interval
    • Creating a user information database
    • Altering read timeouts
    • Altering message timeouts
    • Forking during queue runs
    • Altering queue priorities
    • Setting the mail load limit
    • Setting the delivery mode
    • Log Levels
    • Changing file permissions
    • Turning off security checks
    • Setting connection caching parameters
    • Using sendmail with a name server
    • Moving the per-user forward files
    • Setting mail queue filesystem free space
    • Setting maximum message size
    • Setting privacy flags
    • Setting ``send to me too'' operation
  • Reconfiguring sendmail
  • Administering sendmail
    • Debugging sendmail
    • Changing the values of options
    • Trying a Different Configuration File
    • Logging traffic
    • Testing configuration files
    • Persistent host status information
    • Viewing the system log
    • Log entry format
    • Levels
    • Dumping state
    • Viewing the mail queue
    • Disk-based connection information
    • The service switch
    • Maintaining the alias database
    • Managing spam
    • Enabling user forwarding (.forward files)
    • Special header lines
    • IDENT protocol support
    • Summary of support files
  • Advanced sendmail configuration
    • /usr/lib/sendmail.cf overview
    • Configuration file lines
    • Building a configuration file from scratch
  • For more about sendmail
• Chapter 6: Administering a local MMDF system
  • How to start a Mail manager
  • Managing mail aliases and lists
    • Adding or removing a mail alias
    • Adding or removing an alias member
    • Searching an alias or mailing list
    • Maintaining mailing lists
  • Adding or removing a mail user
    • Adding or removing a user from system-wide aliases
    • Redirecting mail to another user
    • Removing or moving a retired mailbox
  • Checking the status of mail queues
    • Removing old mail from the queues
  • Monitoring log files
  • MMDF configuration files
    • Alias and mailing list tables
    • Assigning Mail IDs
    • The mmdftailor file
    • Editing configuration files manually
    • Mailbox locking
• Appendix A: mail(C) commands
• Appendix B: Mail/MMDF glossary
• Index