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The Exim Mail Transfer Agent
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The specification of the Exim Mail Transfer Agent is converted
mechanically into Texinfo format from its original marked-up source.
Some typographic representations are changed, chapters and sections
cannot be numbered, and Texinfo lacks the ability to mark updated parts
of the specification with change bars.

Because the chapters and sections are unnumbered, cross references are
set to their names. This makes the English a bit odd, with phrases like
`see chapter "Retry configuration"' but it seemed very cumbersome to
change this to `see the chapter entitled "Retry configuration"' each
time.

Each chapter, section, and configuration option has been placed in a
separate Texinfo node. Texinfo doesn't allow commas, colons, or
apostrophes in node names, which is a rather nasty restriction. I have
arranged not to use colons or apostrophes in section titles, but cannot
bring myself to omit them from titles such as "The foo, bar and baz
commands". For the corresponding node names I have just used multiple
occurrences of "and", though it looks very ugly.

If a chapter or section continues after a list of configuration options
that is not in a new section, a new node is started, using the
chapter's or section's name plus `(continued)'. The `Up' operation from
a section or configuration option returns to the start of the current
chapter; the `Up' operation at a chapter start returns to the top of
the document; the `Up' in a list of configuration options within a
section returns to the top of that section.

A number of drivers have options with the same name, so they have been
disambiguated by adding the name of the driver to the option's name.
Thus, for example, the specification of the `prefix' option of the
`appendfile' transport is in a node called `prefix (appendfile)'.

Introduction

Incorporated code

How Exim delivers mail

Building and installing Exim

The Exim command line

File and database lookups

The Exim configuration file

Regular expressions

String expansions

Embedded Perl

Main configuration

Driver specifications

Environment for running local transports

Generic options for transports

The appendfile transport

The autoreply transport

The lmtp transport

The pipe transport

The smtp transport

Generic options common to both directors and routers

Additional generic options for directors

Options common to the aliasfile and forwardfile directors

The aliasfile director

The forwardfile director

The localuser director

The smartuser director

Additional generic options for routers

The domainlist router

The ipliteral router

The iplookup router

The lookuphost router

The queryprogram router

Retry configuration

Address rewriting

SMTP authentication

The plaintext authenticator

The cram_md5 authenticator

Encrypted SMTP connections using TLS/SSL

Customizing error and warning messages

The default configuration file

Multiple user mailboxes

Using Exim to handle mailing lists

Virtual domains

Intermittently connected hosts

Verification of incoming mail

Other policy controls on incoming mail

System-wide message filtering

SMTP processing

Message processing

Automatic mail processing

Log files

Day-to-day management

Exim utilities

The Exim monitor

Security considerations

Format of spool files

Adding new drivers or lookup types

Concept Index