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+++ b/intro.html
@@ -9,7 +9,7 @@
     <center>
       <img src="images/exim-blue-ld.png" alt="[big logo]">
     </center>
-    <h1>Introduction to exim</h1> 
+    <h1>Introduction to exim</h1>
 
     <p>Exim is a message transfer agent (<b>MTA</b>) developed at the
     University of Cambridge for use on Unix systems connected to the
@@ -31,206 +31,206 @@
     <h2>Basic Features</h2>
     <ul>
       <li>
-	Many configuration options can be given as expansion strings,
-	and as these can include file lookups, much of Exim's
-	operation can be made table-driven if desired.  For example,
-	it is possible to do local delivery on a machine on which the
-	users do not have accounts.
+ Many configuration options can be given as expansion strings,
+ and as these can include file lookups, much of Exim's
+ operation can be made table-driven if desired.  For example,
+ it is possible to do local delivery on a machine on which the
+ users do not have accounts.
       </li>
       <!-- -->
       <li>
-	Regular expressions are available in a number of configuration
-	parameters.
+ Regular expressions are available in a number of configuration
+ parameters.
       </li>
       <!-- -->
       <li>
-	Domain lists can include file lookups, making it possible to
-	support a large number of local domains.
+ Domain lists can include file lookups, making it possible to
+ support a large number of local domains.
       </li>
       <!-- -->
       <li>
-	The maximum size of message can be specified.
+ The maximum size of message can be specified.
       </li>
       <!-- -->
       <li>
-	Exim can handle a number of independent local domains on the
-	same machine; each domain can have its own alias files,
-	etc. These are commonly called <b>virtual domains</b>.
+ Exim can handle a number of independent local domains on the
+ same machine; each domain can have its own alias files,
+ etc. These are commonly called <b>virtual domains</b>.
       </li>
       <!-- -->
       <li>
-	Exim contains an optional built-in mail filtering
-	facility. This enables users to set up their own mail
-	filtering in a straightforward manner without the need to run
-	an external program. There can also be a system filter file
-	that applies to all messages.
+ Exim contains an optional built-in mail filtering
+ facility. This enables users to set up their own mail
+ filtering in a straightforward manner without the need to run
+ an external program. There can also be a system filter file
+ that applies to all messages.
       </li>
       <!-- -->
       <li>
-	Periodic warnings are automatically sent to messages' senders
-	when delivery is delayed -- the time between warnings is
-	configurable.
+ Periodic warnings are automatically sent to messages' senders
+ when delivery is delayed -- the time between warnings is
+ configurable.
       </li>
       <!-- -->
       <li>
-	A queue run can be manually started to deliver just a
-	particular portion of the queue, or those messages with a
-	recipient whose address contains a given string.
+ A queue run can be manually started to deliver just a
+ particular portion of the queue, or those messages with a
+ recipient whose address contains a given string.
       </li>
       <!-- -->
       <li>
-	Exim can be configured to run as root all the time, except
-	when performing local deliveries, which it always does in a
-	separate process under an appropriate uid and
-	gid. Alternatively, it can be configured to run as root only
-	when needed; in particular, it need not run as root when
-	receiving incoming messages or when sending out messages over
-	SMTP.
+ Exim can be configured to run as root all the time, except
+ when performing local deliveries, which it always does in a
+ separate process under an appropriate uid and
+ gid. Alternatively, it can be configured to run as root only
+ when needed; in particular, it need not run as root when
+ receiving incoming messages or when sending out messages over
+ SMTP.
       </li>
       <!-- -->
     </ul>
     <h2>Incoming SMTP</h2>
     <ul>
       <li>
-	SMTP calls from specific machines, optionally from specific
-	idents, can be locked out, and incoming SMTP messages from
-	specific senders can also be locked out.
+ SMTP calls from specific machines, optionally from specific
+ idents, can be locked out, and incoming SMTP messages from
+ specific senders can also be locked out.
       </li>
       <!-- -->
       <li>
-	Messages on the queue can be `frozen' and `thawed' by the
-	administrator.
+ Messages on the queue can be `frozen' and `thawed' by the
+ administrator.
       </li>
       <!-- -->
     </ul>
     <h2>Outgoing SMTP</h2>
     <ul>
       <li>
-	Exim can perform multiple deliveries down the same SMTP
-	channel after deliveries to a host have been delayed.
+ Exim can perform multiple deliveries down the same SMTP
+ channel after deliveries to a host have been delayed.
       </li>
       <!-- -->
       <li>
-	Exim can be configured to do local deliveries immediately but
-	to leave remote deliveries until the message is picked up by a
-	queue-runner process. This increases the likelihood of
-	multiple messages being sent down a single SMTP connection.
+ Exim can be configured to do local deliveries immediately but
+ to leave remote deliveries until the message is picked up by a
+ queue-runner process. This increases the likelihood of
+ multiple messages being sent down a single SMTP connection.
       </li>
       <!-- -->
       <li>
-	When copies of a message have to be delivered to more than one
-	remote host, up to a configured maximum number of remote
-	deliveries can be done in parallel.
+ When copies of a message have to be delivered to more than one
+ remote host, up to a configured maximum number of remote
+ deliveries can be done in parallel.
       </li>
       <!-- -->
     </ul>
     <h2>Local Deliveries</h2>
     <ul>
       <li>
-	Exim stats a user's home directory before looking for a
-	`<tt>.forward</tt>' file, in order to detect the case of a
-	missing NFS mount.
+ Exim stats a user's home directory before looking for a
+ `<tt>.forward</tt>' file, in order to detect the case of a
+ missing NFS mount.
       </li>
       <!-- -->
       <li>
-	There is support for multiple user mailboxes controlled by
-	prefixes or suffixes on the user name, either via the
-	<i>filter</i> mechanism or through multiple
-	`<tt>.forward</tt>' files.
+ There is support for multiple user mailboxes controlled by
+ prefixes or suffixes on the user name, either via the
+ <i>filter</i> mechanism or through multiple
+ `<tt>.forward</tt>' files.
       </li>
       <!-- -->
     </ul>
     <h2>Monitoring and Performance Tools</h2>
     <ul>
       <li>
-	The Exim Monitor is an optional extra; it displays information
-	about Exim's processing in an X window, and an administrator
-	can perform a number of control actions from the window
-	interface.
+ The Exim Monitor is an optional extra; it displays information
+ about Exim's processing in an X window, and an administrator
+ can perform a number of control actions from the window
+ interface.
       </li>
       <!-- -->
       <li>
-	There are a set of tools for summarising the queue, determining
-	what each exim process is currently doing, examining the
-	deliveries hints databases, and summarising the log files into
-	a concise report on activity.
+ There are a set of tools for summarising the queue, determining
+ what each exim process is currently doing, examining the
+ deliveries hints databases, and summarising the log files into
+ a concise report on activity.
       </li>
       <!-- -->
     </ul>
     <h2>SPAM/UCE/UBE Limitation Features</h2>
     <ul>
       <li>
-	Senders can be blocked using a variety of methods, including
-	the ability to apply a set of username or regular expression
-	patterns to incoming mail from particular (or all) domains.
+ Senders can be blocked using a variety of methods, including
+ the ability to apply a set of username or regular expression
+ patterns to incoming mail from particular (or all) domains.
       </li>
       <!-- -->
       <li>
-	All addresses can be checked for validity during the SMTP
-	transaction thus allowing the elimination of mail from
-	non-existent domains.
+ All addresses can be checked for validity during the SMTP
+ transaction thus allowing the elimination of mail from
+ non-existent domains.
       </li>
       <!-- -->
       <li>
-	Relaying can be tightly controlled based on sending host,
-	network or sending/recipient domains.
+ Relaying can be tightly controlled based on sending host,
+ network or sending/recipient domains.
       </li>
       <!-- -->
       <li>
-	If all else fails the system filter can be used to deal with
-	messages based on arbitrary conditions that you can program in
-	(for example block mail with a particular <tt>X-Mailer:</tt>
-	header.
+ If all else fails the system filter can be used to deal with
+ messages based on arbitrary conditions that you can program in
+ (for example block mail with a particular <tt>X-Mailer:</tt>
+ header.
       </li>
     </ul>
     <h2>Limitations</h2>
     <ul>
       <li>
-	Exim is written in ANSI C. This should not be much of a
-	limitation these days.  However, to help with systems that
-	lack a true ANSI C library, Exim avoids making any use of the
-	value returned by the `<tt>sprintf()</tt>' function, which is
-	one of the main incompatibilities. It has its own version of
-	`<tt>strerror()</tt>' for use with <b>SunOS4</b> and any other
-	system that lacks this function, and a macro can be defined to
-	turn `<tt>memmove()</tt>' into `<tt>bcopy()</tt>' if
-	necessary.
+ Exim is written in ANSI C. This should not be much of a
+ limitation these days.  However, to help with systems that
+ lack a true ANSI C library, Exim avoids making any use of the
+ value returned by the `<tt>sprintf()</tt>' function, which is
+ one of the main incompatibilities. It has its own version of
+ `<tt>strerror()</tt>' for use with <b>SunOS4</b> and any other
+ system that lacks this function, and a macro can be defined to
+ turn `<tt>memmove()</tt>' into `<tt>bcopy()</tt>' if
+ necessary.
       </li>
       <!-- -->
       <li>
-	  Exim uses file names that are longer than 14 characters.
-	</li>
+   Exim uses file names that are longer than 14 characters.
+ </li>
       <!-- -->
       <li>
-	Exim is intended for use as an Internet mailer, and therefore
-	handles addresses in RFC 822 domain format only. It cannot
-	handle <i>bang paths</i>, though simple two-component bang
-	paths can be converted by a straightforward rewriting
-	configuration.
+ Exim is intended for use as an Internet mailer, and therefore
+ handles addresses in RFC 822 domain format only. It cannot
+ handle <i>bang paths</i>, though simple two-component bang
+ paths can be converted by a straightforward rewriting
+ configuration.
       </li>
       <!-- -->
       <li>
-	Exim insists that every address it handles has a domain
-	attached. For incoming local messages, domainless addresses
-	are automatically qualified with a configured domain
-	value. Configuration options specify from which remote systems
-	unqualified addresses are acceptable.
+ Exim insists that every address it handles has a domain
+ attached. For incoming local messages, domainless addresses
+ are automatically qualified with a configured domain
+ value. Configuration options specify from which remote systems
+ unqualified addresses are acceptable.
       </li>
       <!-- -->
       <li>
-	The only external transport currently implemented is an SMTP
-	transport over a TCP/IP network (using sockets), suitable for
-	machines on the Internet. However, a pipe transport is
-	available, and there are facilities for writing messages to
-	files in `batched SMTP' format; this can be used to send
-	messages to some other transport mechanism. Batched SMTP input
-	is also catered for.
+ The only external transport currently implemented is an SMTP
+ transport over a TCP/IP network (using sockets), suitable for
+ machines on the Internet. However, a pipe transport is
+ available, and there are facilities for writing messages to
+ files in `batched SMTP' format; this can be used to send
+ messages to some other transport mechanism. Batched SMTP input
+ is also catered for.
       </li>
       <!-- -->
     </ul>
     <hr>
     <address><a href="mailto:Postmaster@exim.org">Nigel Metheringham</a></address>
 <!-- Created: Mon Aug 25 13:21:52 BST 1997 -->
-    <h4>$Id: intro.html,v 1.2 2000/11/27 11:43:02 nigel Exp $</h4>
+    <h4>$Cambridge$</h4>
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