[Emacs-diffs] Changes to smtpmail.texi

[Glenn Morris]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Glenn Morris <gm>       07/09/06 04:40:36

Index: smtpmail.texi
===================================================================
RCS file: smtpmail.texi
diff -N smtpmail.texi
--- smtpmail.texi       15 Apr 2007 20:57:15 -0000      1.17
+++ /dev/null   1 Jan 1970 00:00:00 -0000
@@ -1,427 +0,0 @@
-\input texinfo  @c -*-texinfo-*-
address@hidden ../info/smtpmail
address@hidden Emacs SMTP Library
address@hidden vr fn
address@hidden
-Copyright @copyright{} 2003, 2004, 2005, 2006, 2007 Free Software Foundation, 
Inc.
-
address@hidden
-Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no
-Invariant Sections, with the Front-Cover texts being ``A GNU Manual'',
-and with the Back-Cover Texts as in (a) below.  A copy of the license
-is included in the section entitled ``GNU Free Documentation License''
-in the Emacs manual.
-
-(a) The FSF's Back-Cover Text is: ``You have freedom to copy and modify
-this GNU Manual, like GNU software.  Copies published by the Free
-Software Foundation raise funds for GNU development.''
-
-This document is part of a collection distributed under the GNU Free
-Documentation License.  If you want to distribute this document
-separately from the collection, you can do so by adding a copy of the
-license to the document, as described in section 6 of the license.
address@hidden quotation
address@hidden copying
-
address@hidden Emacs
address@hidden
-* SMTP: (smtpmail). Emacs library for sending mail via SMTP.
address@hidden direntry
-
address@hidden
address@hidden SMTP Library}
address@hidden Emacs package for sending mail via SMTP}
address@hidden Josefsson, Alex Schroeder}
address@hidden
address@hidden 0pt plus 1filll
address@hidden
address@hidden titlepage
-
address@hidden
-
address@hidden
address@hidden Top
address@hidden Emacs SMTP Library
-
address@hidden
address@hidden ifnottex
-
address@hidden
-* How Mail Works::     Brief introduction to mail concepts.
-* Emacs Speaks SMTP::   How to use the SMTP library in Emacs.
-* Authentication::     Authenticating yourself to the server.
-* Queued delivery::    Sending mail without an internet connection.
-* Server workarounds:: Mail servers with special requirements.
-* Debugging::          Tracking down problems.
-* GNU Free Documentation License:: The license for this documentation.
-
-Indices
-
-* Index::              Index over variables and functions.
address@hidden menu
-
address@hidden How Mail Works
address@hidden How Mail Works
-
address@hidden SMTP
address@hidden MTA
-   On the internet, mail is sent from mail host to mail host using the
-simple mail transfer protocol (SMTP).  To send and receive mail, you
-must get it from and send it to a mail host.  Every mail host runs a
-mail transfer agent (MTA) such as Exim that accepts mails and passes
-them on.  The communication between a mail host and other clients does
-not necessarily involve SMTP, however.  Here is short overview of what
-is involved.
-
address@hidden MUA
-   The mail program --- also called a mail user agent (MUA) ---
-usually sends outgoing mail to a mail host.  When your computer is
-permanently connected to the internet, it might even be a mail host
-itself.  In this case, the MUA will pipe mail to the
address@hidden/usr/lib/sendmail} application.  It will take care of your mail
-and pass it on to the next mail host.
-
address@hidden ISP
-   When you are only connected to the internet from time to time, your
-internet service provider (ISP) has probably told you which mail host
-to use.  You must configure your MUA to use that mail host.  Since you
-are reading this manual, you probably want to configure Emacs to use
-SMTP to send mail to that mail host.  More on that in the next
-section.
-
address@hidden MDA
-   Things are different when reading mail.  The mail host responsible
-for your mail keeps it in a file somewhere.  The messages get into the
-file by way of a mail delivery agent (MDA) such as procmail.  These
-delivery agents often allow you to filter and munge your mails before
-you get to see it.  When your computer is that mail host, this file is
-called a spool, and sometimes located in the directory
address@hidden/var/spool/mail/}.  All your MUA has to do is read mail from the
-spool, then.
-
address@hidden POP3
address@hidden IMAP
-   When your computer is not always connected to the internet, you
-must get the mail from the remote mail host using a protocol such as
-POP3 or IMAP.  POP3 essentially downloads all your mail from the mail
-host to your computer.  The mail is stored in some file on your
-computer, and again, all your MUA has to do is read mail from the
-spool.
-
-   When you read mail from various machines, downloading mail from the
-mail host to your current machine is not convenient.  In that case,
-you will probably want to use the IMAP protocol.  Your mail is kept on
-the mail host, and you can read it while you are connected via IMAP to
-the mail host.
-
address@hidden Webmail
-   So how does reading mail via the web work, you ask.  In that case,
-the web interface just allows you to remote-control a MUA on the web
-host.  Whether the web host is also a mail host, and how all the
-pieces interact is completely irrelevant.  You usually cannot use
-Emacs to read mail via the web, unless you use software that parses
-the ever-changing HTML of the web interface.
-
address@hidden Emacs Speaks SMTP
address@hidden Emacs Speaks SMTP
-
-   Emacs includes a package for sending your mail to a SMTP server and
-have it take care of delivering it to the final destination, rather
-than letting the MTA on your local system take care of it.  This can
-be useful if you don't have a MTA set up on your host, or if your
-machine is often disconnected from the internet.
-
-  Sending mail via SMTP requires configuring your mail user agent
-(@pxref{Mail Methods,,,emacs}) to use the SMTP library.  How to do
-this should be described for each mail user agent; for the default
-mail user agent the variable @code{send-mail-function} (@pxref{Mail
-Sending,,,emacs}) is used; for the Message and Gnus user agents the
-variable @code{message-send-mail-function} (@pxref{Mail
-Variables,,,message}) is used.
-
address@hidden
-;; If you use the default mail user agent.
-(setq send-mail-function 'smtpmail-send-it)
-;; If you use Message or Gnus.
-(setq message-send-mail-function 'smtpmail-send-it)
address@hidden example
-
-  Before using SMTP you must find out the hostname of the SMTP server
-to use.  Your system administrator should provide you with this
-information, but often it is the same as the server you receive mail
-from.
-
address@hidden @code
address@hidden smtpmail-smtp-server
address@hidden smtpmail-smtp-server
address@hidden SMTPSERVER
-  The variable @code{smtpmail-smtp-server} controls the hostname of
-the server to use.  It is a string with an IP address or hostname.  It
-defaults to the contents of the @env{SMTPSERVER} environment
-variable, or, if empty, the contents of
address@hidden
-
address@hidden smtpmail-default-smtp-server
address@hidden smtpmail-default-smtp-server
-  The variable @code{smtpmail-default-smtp-server} controls the
-default hostname of the server to use.  It is a string with an IP
-address or hostname.  It must be set before the SMTP library is
-loaded.  It has no effect if set after the SMTP library has been
-loaded, or if @code{smtpmail-smtp-server} is defined.  It is usually
-set by system administrators in a site wide initialization file.
address@hidden table
-
-The following example illustrates what you could put in
address@hidden/.emacs} to set the SMTP server name.
-
address@hidden
-;; Send mail using SMTP via mail.example.org.
-(setq smtpmail-smtp-server "mail.example.org")
address@hidden example
-
address@hidden Mail Submission
-SMTP is normally used on the registered ``smtp'' TCP service port 25.
-Some environments use SMTP in ``Mail Submission'' mode, which uses
-port 587.  Using other ports is not uncommon, either for security by
-obscurity purposes, port forwarding, or otherwise.
-
address@hidden @code
address@hidden smtpmail-smtp-service
address@hidden smtpmail-smtp-service
-  The variable @code{smtpmail-smtp-service} controls the port on the
-server to contact.  It is either a string, in which case it will be
-translated into an integer using system calls, or an integer.
address@hidden table
-
-The following example illustrates what you could put in
address@hidden/.emacs} to set the SMTP service port.
-
address@hidden
-;; Send mail using SMTP on the mail submission port 587.
-(setq smtpmail-smtp-service 587)
address@hidden example
-
address@hidden Authentication
address@hidden Authentication
-
address@hidden SASL
address@hidden CRAM-MD5
address@hidden LOGIN
address@hidden STARTTLS
address@hidden TLS
address@hidden SSL
-Many environments require SMTP clients to authenticate themselves
-before they are allowed to route mail via a server.  The two following
-variables contains the authentication information needed for this.
-
-The first variable, @code{smtpmail-auth-credentials}, instructs the
-SMTP library to use a SASL authentication step, currently only the
-CRAM-MD5 and LOGIN mechanisms are supported and will be selected in
-that order if the server support both.
-
-The second variable, @code{smtpmail-starttls-credentials}, instructs
-the SMTP library to connect to the server using STARTTLS.  This means
-the protocol exchange may be integrity protected and confidential by
-using the Transport Layer Security (TLS) protocol, and optionally also
-authentication of the client and server.
-
-TLS is a security protocol that is also known as SSL, although
-strictly speaking, SSL is an older variant of TLS.  TLS is backwards
-compatible with SSL.  In most mundane situations, the two terms are
-equivalent.
-
-The TLS feature uses the elisp package @file{starttls.el} (see it for
-more information on customization), which in turn require that at
-least one of the following external tools are installed:
-
address@hidden
address@hidden
-The GNUTLS command line tool @samp{gnutls-cli}, you can get it from
address@hidden://www.gnu.org/software/gnutls/}.  This is the recommended
-tool, mainly because it can verify the server certificates.
-
address@hidden
-The @samp{starttls} external program, you can get it from
address@hidden from @uref{ftp://ftp.opaopa.org/pub/elisp/}.
address@hidden enumerate
-
-It is not uncommon to use both these mechanisms, e.g., to use STARTTLS
-to achieve integrity and confidentiality and then use SASL for client
-authentication.
-
address@hidden @code
address@hidden smtpmail-auth-credentials
address@hidden smtpmail-auth-credentials
-  The variable @code{smtpmail-auth-credentials} contains a list of
-hostname, port, username and password tuples.  When the SMTP library
-connects to a host on a certain port, this variable is searched to
-find a matching entry for that hostname and port.  If an entry is
-found, the authentication process is invoked and the credentials are
-used.
-
-The hostname field follows the same format as
address@hidden (i.e., a string) and the port field the
-same format as @code{smtpmail-smtp-service} (i.e., a string or an
-integer).  The username and password fields, which either can be
address@hidden to indicate that the user is prompted for the value
-interactively, should be strings with the username and password,
-respectively, information that is normally provided by system
-administrators.
-
address@hidden smtpmail-starttls-credentials
address@hidden smtpmail-starttls-credentials
-  The variable @code{smtpmail-starttls-credentials} contains a list of
-tuples with hostname, port, name of file containing client key, and
-name of file containing client certificate.  The processing is similar
-to the previous variable.  The client key and certificate may be
address@hidden if you do not wish to use client authentication.
address@hidden table
-
-The following example illustrates what you could put in
address@hidden/.emacs} to enable both SASL authentication and STARTTLS.  The
-server name (@code{smtpmail-smtp-server}) is @var{hostname}, the
-server port (@code{smtpmail-smtp-service}) is @var{port}, and the
-username and password are @var{username} and @var{password}
-respectively.
-
address@hidden
-;; Authenticate using this username and password against my server.
-(setq smtpmail-auth-credentials
-      '(("@var{hostname}" "@var{port}" "@var{username}" "@var{password}")))
-
-;; Note that if @var{port} is an integer, you must not quote it as a
-;; string.  Normally @var{port} should be the integer 25, and the example
-;; become:
-(setq smtpmail-auth-credentials
-      '(("@var{hostname}" 25 "@var{username}" "@var{password}")))
-
-;; Use STARTTLS without authentication against the server.
-(setq smtpmail-starttls-credentials
-      '(("@var{hostname}" "@var{port}" nil nil)))
address@hidden example
-
address@hidden Queued delivery
address@hidden Queued delivery
-
address@hidden Dialup connection
-If you connect to the internet via a dialup connection, or for some
-other reason don't have permanent internet connection, sending mail
-will fail when you are not connected.  The SMTP library implements
-queued delivery, and the following variable control its behavior.
-
address@hidden @code
address@hidden smtpmail-queue-mail
address@hidden smtpmail-queue-mail
-  The variable @code{smtpmail-queue-mail} controls whether a simple
-off line mail sender is active.  This variable is a boolean, and
-defaults to @code{nil} (disabled).  If this is address@hidden, mail is
-not sent immediately but rather queued in the directory
address@hidden and can be later sent manually by invoking
address@hidden (typically when you connect to the
-internet).
-
address@hidden smtpmail-queue-dir
address@hidden smtpmail-queue-dir
-  The variable @code{smtpmail-queue-dir} specifies the name of the
-directory to hold queued messages.  It defaults to
address@hidden/Mail/queued-mail/}.
address@hidden table
-
address@hidden smtpmail-send-queued-mail
-  The function @code{smtpmail-send-queued-mail} can be used to send
-any queued mail when @code{smtpmail-queue-mail} is enabled.  It is
-typically invoked interactively with @kbd{M-x
-smtpmail-send-queued-mail RET} when you are connected to the internet.
-
address@hidden Server workarounds
address@hidden Server workarounds
-
-Some SMTP servers have special requirements.  The following variables
-implement support for common requirements.
-
address@hidden @code
-
address@hidden smtpmail-local-domain
address@hidden smtpmail-local-domain
-  The variable @code{smtpmail-local-domain} controls the hostname sent
-in the first @code{EHLO} or @code{HELO} command sent to the server.
-It should only be set if the @code{system-name} function returns a
-name that isn't accepted by the server.  Do not set this variable
-unless your server complains.
-
address@hidden smtpmail-sendto-domain
address@hidden smtpmail-sendto-domain
-  The variable @code{smtpmail-sendto-domain} makes the SMTP library
-add @samp{@@} and the specified value to recipients specified in the
-message when they are sent using the @code{RCPT TO} command.  Some
-configurations of sendmail requires this behavior.  Don't bother to
-set this unless you have get an error like:
-
address@hidden
-       Sending failed; SMTP protocol error
address@hidden example
-
-when sending mail, and the debug buffer (@pxref{Debugging})) contains
-an error such as:
-
address@hidden
-       RCPT TO: @var{someone}
-       501 @var{someone}: recipient address must contain a domain
address@hidden example
-
address@hidden table
-
-
address@hidden Debugging
address@hidden Debugging
-
-Sometimes delivery fails, often with the generic error message
address@hidden failed; SMTP protocol error}.  Enabling one or both of
-the following variables and inspecting a trace buffer will often give
-clues to the reason for the error.
-
address@hidden @code
-
address@hidden smtpmail-debug-info
address@hidden smtpmail-debug-info
-  The variable @code{smtpmail-debug-info} controls whether to print
-the SMTP protocol exchange in the minibuffer, and retain the entire
-exchange in a buffer @samp{*trace of SMTP session to @var{server}*},
-where @var{server} is the name of the mail server to which you send
-mail.
-
address@hidden smtpmail-debug-verb
address@hidden smtpmail-debug-verb
-  The variable @code{smtpmail-debug-verb} controls whether to send the
address@hidden token to the server.  The @code{VERB} server instructs the
-server to be more verbose, and often also to attempt final delivery
-while your SMTP session is still running.  It is usually only useful
-together with @code{smtpmail-debug-info}.  Note that this may cause
-mail delivery to take considerable time if the final destination
-cannot accept mail.
-
address@hidden table
-
address@hidden GNU Free Documentation License
address@hidden GNU Free Documentation License
address@hidden doclicense.texi
-
address@hidden Index
address@hidden Index
-
address@hidden Concept Index
-
address@hidden cp
-
address@hidden Function and Variable Index
-
address@hidden fn
-
address@hidden
address@hidden
-
address@hidden
-   arch-tag: 6316abdf-b366-4562-87a2-f37e8f894b6f
address@hidden ignore