GNU Mailutils Manual

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GNU Mailutils

This edition of the GNU Mailutils Manual, last updated on 13 July 2020, documents GNU Mailutils Version 3.10.

• Introduction  Preliminary Information.
• Mailbox  Mailboxes and URLs.
• Programs  Mailutils Programs.
• Libraries  Mailutils Libraries.
• Sieve Language  The Sieve Language.
• Reporting Bugs  How to Report a Bug.
• News  Getting News About GNU Mailutils.
• Acknowledgement  Thanks and Credits. 

Appendices
• References  References.
• Date Input Formats  
• Date/time Format String  
• Usage Vars  Configuring Help Summary
• GNU FDL  This manual is under the GNU Free Documentation License. 

Indices
• Function Index  All Mailutils Functions.
• Variable Index  All Mailutils Variables.
• Keyword Index  Index of Keywords.
• Program Index  All Mailutils Programs.
• Concept Index  Index of Concepts. 


 — The Detailed Node Listing —

Introduction
• Book Contents  What this Book Contains
• History  A bit of History 

Mailbox
• Local Mailboxes  Mailboxes stored on the local file system.
• Remote Mailboxes  Mailboxes stored on remote hosts.
• SMTP Mailboxes  Mailboxes that send mail.
• Program Mailboxes   

Mailutils Programs
• command line  Command Line Syntax.
• configuration  Common Configuration File.
• debugging  
• frm and from  List Headers from a Mailbox.
• mail  Send and Receive Mail.
• messages  Count the Number of Messages in a Mailbox.
• movemail  Moves Mail from the User Maildrop to the Local File.
• readmsg  Extract Messages from a Folder.
• decodemail  Decode MIME messages.
• sieve  Mail Filtering Utility.
• guimb  Mailbox Scanning and Processing Language.
• mda  Local Mail Delivery Agent.
• lmtpd  LMTP Daemon.
• putmail  Incorporate a Message to a Mailbox.
• mimeview  Universal File Viewer.
• pop3d  POP3 Daemon.
• imap4d  IMAP4 Daemon.
• comsatd  Comsat Daemon.
• mh  The MH Message Handling System.
• mailutils  The Mailutils Multi-Purpose Tool. 

Command Line
• Option Basics  Basic Notions About Command Line Options.
• Common Options  Options That are Common for All Utilities. 

Mailutils Configuration File
• conf-syntax  Configuration File Syntax
• Variables  Variable Expansion
• include  Include Statement
• program statement  
• logging statement  
• debug statement  
• mailbox statement  
• locking statement  
• mailer statement  
• acl statement  
• tcp-wrappers statement  
• Server Settings  
• auth statement  
• pam statement  
• virtdomain statement  
• radius statement  
• sql statement  
• ldap statement  
• tls statement  
• tls-file-checks statement  
• gsasl statement   

Configuration File Syntax
• Comments  
• Statements  
• Paths   

Server Settings
• General Server Configuration  
• Server Statement   

Debugging
• Level Syntax  
• Level BNF  
• Debugging Categories   

mail — Send and Receive Mail
• Invoking Mail  Command Line Options.
• Reading Mail  Reading Mail.
• Composing Mail  Composing Mail.
• MIME  How to Attach Files.
• Scripting  Scripting.
• Mail Variables  How to Alter the Behavior of mail.
• Mail Configuration Files  Personal and System-wide Configuration Files. 

Reading Mail
• Command Syntax  Syntax of mail internal commands.
• Quitting the Program  
• Obtaining Online Help  
• Moving Within a Mailbox  
• Changing mailbox/directory  
• Controlling Header Display  
• Displaying Information  
• Displaying Messages  
• Marking Messages  
• Disposing of Messages  
• Saving Messages  
• Editing Messages  
• Aliasing  
• Replying  
• Controlling Sender Fields  
• Incorporating New Mail  
• Shell Escapes   

Composing Mail
• Quitting Compose Mode  
• Getting Help on Compose Escapes  
• Editing the Message  
• Modifying the Headers  
• Enclosing Another Message  
• Adding a File to the Message  
• Attaching a File to the Message  
• Printing And Saving the Message  
• Signing the Message  
• Printing Another Message  
• Inserting Value of a Mail Variable  
• Executing Other Mail Commands  
• Executing Shell Commands   

movemail — Moves Mail from the User Maildrop to the Local File
• Movemail Configuration  
• Ownership  Setting Destination Mailbox Ownership
• Summary  Short Movemail Invocation Summary 

readmsg — Extract Messages from a Folder
• Opt-readmsg  Invocation of readmsg.
• Conf-readmsg  Configuration of readmsg. 

sieve
• sieve interpreter  A Sieve Interpreter 

A Sieve Interpreter
• Invoking Sieve  
• Sieve Configuration  
• Logging and Debugging  
• Extending Sieve   

guimb — A Mailbox Scanning and Processing Language
• Specifying Scheme Program to Execute  
• Specifying Mailboxes to Operate Upon  
• Passing Options to Scheme  
• Command Line Option Summary   

mda
• Sendmail-mda  Using mda with Sendmail.
• Exim-mda  Using mda with Exim.
• MeTA1-mda  Using mda with MeTA1.
• Mailbox Quotas  
• MDA Scripting  
• Forwarding  
• Conf-mda  mda Configuration File Summary.
• Mailing lists  How to implement Mailing Lists with mda. 

Mailbox Quotas
• DBM Quotas  Keeping Quotas in DBM File.
• SQL Quotas  Keeping Quotas in SQL Database. 

Scripting in mda
• Sieve MDA Filters  
• Scheme MDA Filters  
• Python MDA Filters   

mimeview
• Mimeview Invocation  
• Mimeview Config   

POP3 Daemon
• Login delay  
• Auto-expire  
• Bulletins  
• Conf-pop3d  Pop3d Configuration
• Command line options   

IMAP4 Daemon
• Namespace  Namespace.
• Conf-imap4d  Configuration.
• Starting imap4d  Invocation Options. 

Comsat Daemon
• Starting comsatd  Invocation.
• Configuring comsatd  Configuration of comsatd.
• dot.biffrc  A per-user configuration file. 

Configuring comsatd
• General Settings  
• Security Settings   

MH — The MH Message Handling System
• Diffs  Major differences between Mailutils MH and other MH implementations. 

Major differences between Mailutils MH and other MH implementations
• Format String Diffs  
• Profile Variable Diffs  
• Program Diffs   

mailutils
• mailutils invocation syntax  
• mailutils help  Display a terse help summary.
• mailutils info  Show Mailutils configuration.
• mailutils cflags  Show compiler options.
• mailutils ldflags  List libraries required to link.
• mailutils stat  Show mailbox status.
• mailutils query  Query configuration values.
• mailutils 2047  Decode/encode email message headers.
• mailutils filter  Apply a chain of filters to the input.
• mailutils acl  Test access control lists.
• mailutils wicket  Scan wickets for matching URLs.
• mailutils dbm  DBM management tool.
• mailutils logger  Log data using Mailutils log facility.
• mailutils pop  POP3 client shell.
• mailutils imap  IMAP4 client shell.
• mailutils send  Send a message.
• mailutils smtp  Run a SMTP session. 

mailutils dbm
• Create a Database  
• Add Records to a Database  
• Delete Records  
• List the Database  
• Dump the Database  
• Dump Formats  
• Dbm Exit Codes   

Sieve Language
• Lexical Structure  
• Syntax  
• Preprocessor  
• Require Statement  
• Comparators  
• Tests  
• Actions  
• Extensions  
• GNU Extensions   

Syntax
• Commands  
• Actions Described  
• Control Flow  
• Tests and Conditions   

Preprocessor
• #include  Include the contents of a file.
• #searchpath  Modify the current search path. 

Tests
• Built-in Tests  
• External Tests   

Actions
• Built-in Actions  
• External Actions   

Extensions
• encoded-character  
• relational  
• variables  
• environment  
• numaddr  
• editheader  
• list  
• moderator  
• pipe  
• spamd  
• timestamp  
• vacation   

Date Input Formats
• General date syntax  Common rules.
• Calendar date items  19 Dec 1994.
• Time of day items  9:20pm.
• Time zone items  EST, PDT, GMT.
• Day of week items  Monday and others.
• Relative items in date strings  next tuesday, 2 years ago.
• Pure numbers in date strings  19931219, 1440.
• Seconds since the Epoch  @1078100502.
• Specifying time zone rules  TZ="America/New_York", TZ="UTC0".
• Authors of get_date  Bellovin, Eggert, Salz, Berets, et al.

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