Added exim4. Now with AUTH_SPA, mailstore, mbx support.

4 files changed, 611 insertions, 0 deletions

diff --git a/net-mail/exim/exim-4.04.ebuild b/net-mail/exim/exim-4.04.ebuild
new file mode 100644
index 000000000000..1e413844668e
--- /dev/null
+++ b/net-mail/exim/exim-4.04.ebuild
@@ -0,0 +1,166 @@
+# Copyright 1999-2000 Gentoo Technologies, Inc.
+# Distributed under the terms of the GNU General Public License, v2 or later
+# Author Jerry Alexandratos <jerry@gentoo.org>
+# Updated to exim-4 by Ben Lutgens <lamer@gentoo.org>
+# $Header: /var/cvsroot/gentoo-x86/net-mail/exim/exim-4.04.ebuild,v 1.1 2002/05/25 22:05:44 lamer Exp $
+
+S=${WORKDIR}/${P}
+DESCRIPTION="A highly configurable, drop-in replacement for sendmail"
+SRC_URI="ftp://ftp.exim.org/pub/exim/exim4/${P}.tar.gz"
+HOMEPAGE="http://www.exim.org/"
+
+DEPEND="virtual/glibc
+		>=sys-libs/db-3.2
+		>=sys-devel/perl-5.6.0
+		>=dev-libs/libpcre-3.4
+		pam? ( >=sys-libs/pam-0.75 )
+		tcpd? ( sys-apps/tcp-wrappers )
+		mta-tls? ( >=dev-libs/openssl-0.9.6 )
+		mta-ldap? ( >=net-nds/openldap-2.0.7 )
+		mta-mysql? ( >=dev-db/mysql-3.23.28 )"
+
+RDEPEND="${DEPEND}
+		 !virtual/mta
+		 >=net-mail/mailbase-0.00"
+
+PROVIDE="virtual/mta"
+
+
+src_unpack() {
+
+	local myconf
+	unpack ${A}
+	cd ${S}
+	
+	# Don't need this in exim4 dir exists
+	#mkdir Local
+	sed -e "48i\CFLAGS=${CFLAGS}" \
+		-e "s:# AUTH_CRAM_MD5=yes:AUTH_CRAM_MD5=yes:" \
+		-e "s:# AUTH_PLAINTEXT=yes:AUTH_PLAINTEXT=yes:" \
+		-e "s:BIN_DIRECTORY=/usr/exim/bin:BIN_DIRECTORY=/usr/sbin:" \
+		-e "s:COMPRESS_COMMAND=/opt/gnu/bin/gzip:COMPRESS_COMMAND=/usr/bin/gzip:" \
+		-e "s:ZCAT_COMMAND=/opt/gnu/bin/zcat:ZCAT_COMMAND=/usr/bin/zcat:" \
+		-e "s:CONFIGURE_FILE=/usr/exim/configure:CONFIGURE_FILE=/etc/exim/configure:" \
+		-e "s:EXIM_MONITOR=eximon.bin:# EXIM_MONITOR=eximon.bin:" \
+		-e "s:# EXIM_PERL=perl.o:EXIM_PERL=perl.o:" \
+		-e "s:# INFO_DIRECTORY=/usr/local/info:INFO_DIRECTORY=/usr/share/info:" \
+		-e "s:# LOG_FILE_PATH=syslog:LOG_FILE_PATH=syslog:" \
+		-e "s:LOG_FILE_PATH=syslog\:/var/log/exim_%slog::" \
+		-e "s:# PID_FILE_PATH=/var/lock/exim%s.pid:PID_FILE_PATH=/var/run/exim%s.pid:" \
+		-e "s:# SPOOL_DIRECTORY=/var/spool/exim:SPOOL_DIRECTORY=/var/spool/exim:" \
+		-e "s:# SUPPORT_MAILDIR=yes:SUPPORT_MAILDIR=yes:" \
+		-e "s:# SUPPORT_MAILSTOR=yes:SUPPORT_MAILSTORE=yes:" \
+		-e "s:# SUPPORT_MBX=yes:SUPPORT_MBX=yes:" \
+		-e "s:EXIM_USER=:EXIM_USER=mail:" \
+		-e "s:# AUTH_SPA=yes:AUTH_SPA=yes:" \
+		src/EDITME > Local/Makefile
+
+	cd Local
+	if use pam; then
+		cp Makefile Makefile.orig
+		sed -e "s:# SUPPORT_PAM=yes:SUPPORT_PAM=yes:" Makefile.orig > Makefile
+		myconf="${myconf} -lpam"
+	fi
+	if use tcpd; then
+		cp Makefile Makefile.orig
+		sed -e "s:# USE_TCP_WRAPPERS=yes:USE_TCP_WRAPPERS=yes:" Makefile.orig > Makefile
+		myconf="${myconf} -lwrap"
+	fi
+	if [ -n "$myconf" ] ; then
+		echo "EXTRALIBS=${myconf}" >> Makefile
+	fi
+
+	cd ${S}
+	if use mta-tls; then
+		cp Local/Makefile Local/Makefile.tmp
+		sed -e "s:# SUPPORT_TLS=yes:SUPPORT_TLS=yes:" \
+			-e "s:# TLS_LIBS=-lssl -lcrypto:TLS_LIBS=-lssl -lcrypto:" Local/Makefile.tmp > Local/Makefile
+	fi
+	if use mta-ldap; then
+		cp Local/Makefile Local/Makefile.tmp
+		sed -e "s:# LOOKUP_LDAP=yes:LOOKUP_LDAP=yes:" \
+			-e "s:# LOOKUP_INCLUDE=-I /usr/local/ldap/include -I /usr/local/mysql/include -I /usr/local/pgsql/include:LOOKUP_INCLUDE=-I/usr/include/ldap -I/usr/include/mysql:" \
+			-e "s:# LOOKUP_LIBS=-L/usr/local/lib -lldap -llber -lmysqlclient -lpq:LOOKUP_LIBS=-L/usr/lib -lldap -llber -lmysqlclient -lpq:" \
+			-e "s:# LDAP_LIB_TYPE=OPENLDAP2:LDAP_LIB_TYPE=OPENLDAP2:" Local/Makefile.tmp >| Local/Makefile
+	fi
+	if use mta-mysql; then
+		cp Local/Makefile Local/Makefile.tmp
+		sed -e "s:# LOOKUP_MYSQL=yes:LOOKUP_MYSQL=yes:" \
+			-e "s:# LOOKUP_LIBS=-L/usr/local/lib -lldap -llber -lmysqlclient -lpq:LOOKUP_LIBS=-L/usr/lib -lldap -llber -lmysqlclient -lpq:" Local/Makefile.tmp >| Local/Makefile
+	fi
+	cat Makefile | sed -e 's/^buildname=.*/buildname=exim-gentoo/g' > Makefile.gentoo && mv -f Makefile.gentoo Makefile
+}
+
+
+src_compile() {
+	make || die
+}
+
+
+src_install () {
+
+	cd ${S}/build-exim-gentoo
+	insopts -o root -g root -m 4755
+	insinto /usr/sbin
+	doins exim
+
+	dodir /usr/bin /usr/sbin /usr/lib
+	dosym /usr/sbin/exim /usr/bin/mailq
+	dosym /usr/sbin/exim /usr/bin/newaliases
+	dosym /usr/sbin/exim /usr/bin/mail
+	dosym /usr/sbin/exim /usr/lib/sendmail
+	dosym /usr/sbin/exim /usr/sbin/sendmail
+
+	exeinto /usr/sbin
+	for i in exicyclog exim_dbmbuild exim_dumpdb exim_fixdb exim_lock \
+		exim_tidydb exinext exiwhat exigrep eximstats exiqsumm
+	do
+		doexe $i
+	done
+	
+	# This stuff shows up in ${S}/exim-build-gentoo now. Wierd.
+	#cd ${S}/util
+	#exeinto /usr/sbin
+	#for i in exigrep eximstats exiqsumm
+	#do
+	#	doexe $i
+	#done
+
+	dodir /etc/exim /etc/exim/samples
+	
+	insopts -o root -g root -m 0644
+	insinto /etc/exim/samples
+	doins ${FILESDIR}/smtp-auth-tls-client-configure
+	cd ${S}/src
+	insopts -o root -g root -m 0644
+	insinto /etc/exim
+	doins configure.default
+
+	dodoc ${S}/doc/*
+	doman ${S}/doc/exim.8
+	# INSTALL a pam.d file for SMTP AUTH that works with gentoo's pam
+	insinto /etc/pam.d
+	doins ${FILESDIR}/pam.d-exim
+
+	# A nice filter for exim to protect your windows clients.
+	insinto /etc/exim
+	doins ${FILESDIR}/system_filter.exim
+	dodoc ${FILESDIR}/auth_conf.sub
+
+	exeinto /etc/init.d
+	newexe ${FILESDIR}/exim.rc6 exim
+	insinto /etc/conf.d
+	newins ${FILESDIR}/exim.confd exim
+}
+
+
+pkg_config() {
+
+	${ROOT}/usr/sbin/rc-update add exim
+}
+pkg_postinst() {
+	einfo "Read the bottom of /etc/exim/system_filter.exim for usage."
+	einfo "/usr/share/doc/${P}/auth_conf.sub.gz contains the configuration sub for using smtp auth."
+	einfo "Please create /etc/exim/configure from /etc/exim/configure.default."
+	einfo "Also see /etc/exim/samples dir for example configs."
+}
diff --git a/net-mail/exim/files/auth_conf.sub b/net-mail/exim/files/auth_conf.sub
index 7f413d3249e8..fb744a5a67a1 100644
--- a/net-mail/exim/files/auth_conf.sub
+++ b/net-mail/exim/files/auth_conf.sub
@@ -20,3 +20,6 @@ login:
   server_prompts = "Username:: : Password::"
   server_condition = "${if pam{$1:$2}{1}{0}}"
   server_set_id = $1
+
+# FIXME
+# Need to add authenticator for SPA!!
diff --git a/net-mail/exim/files/digest-exim-4.04 b/net-mail/exim/files/digest-exim-4.04
new file mode 100644
index 000000000000..3a9c1aaa7444
--- /dev/null
+++ b/net-mail/exim/files/digest-exim-4.04
@@ -0,0 +1 @@
+MD5 cfe70a927d66a4bd5ec075b5127d3529 exim-4.04.tar.gz 1338993
diff --git a/net-mail/exim/files/smtp-auth-tls-client-configure b/net-mail/exim/files/smtp-auth-tls-client-configure
new file mode 100644
index 000000000000..e1b469532711
--- /dev/null
+++ b/net-mail/exim/files/smtp-auth-tls-client-configure
@@ -0,0 +1,441 @@
+#!!# This file is output from the convert4r4 script, which tries
+#!!# to convert Exim 3 configurations into Exim 4 configurations.
+#!!# However, it is not perfect, especially with non-simple
+#!!# configurations. You must check it before running it.
+
+
+#!!# These options specify the Access Control Lists (ACLs) that
+#!!# are used for incoming SMTP messages - after the RCPT and DATA
+#!!# commands, respectively.
+
+acl_smtp_rcpt = check_recipient
+acl_smtp_data = check_message
+
+#!!# This setting defines a named domain list called
+#!!# local_domains, created from the old options that
+#!!# referred to local domains. It will be referenced
+#!!# later on by the syntax "+local_domains".
+#!!# Other domain and host lists may follow.
+
+domainlist local_domains = @ : \
+    localhost : \
+    rtfm.sistina.com
+
+hostlist relay_hosts = localhost
+
+# This is the main exim configuration file.
+# It was originally generated by `eximconfig', part of the exim RPM, but it 
+# may edited by the mail system administrator.
+# This file originally generated by eximconfig at Sat Feb 16 17:35:38 CST 2002
+# See exim info section for details of the things that can be configured here.
+
+# Please see the manual for a complete list
+# of all the runtime configuration options that can be included in a
+# configuration file.
+
+# This file is divided into several parts, all but the last of which are
+# terminated by a line containing the word "end". The parts must appear
+# in the correct order, and all must be present (even if some of them are
+# in fact empty). Blank lines, and lines starting with # are ignored.
+
+######################################################################
+#                    MAIN CONFIGURATION SETTINGS                     #
+######################################################################
+
+# Specify the domain you want to be added to all unqualified addresses
+# here. Unqualified addresses are accepted only from local callers by
+# default. See the receiver_unqualified_{hosts,nets} options if you want
+# to permit unqualified addresses from remote sources. If this option is
+# not set, the primary_hostname value is used for qualification.
+primary_hostname = rtfm.sistina.com
+qualify_domain = sistina.com
+
+# If you want unqualified recipient addresses to be qualified with a different
+# domain to unqualified sender addresses, specify the recipient domain here.
+# If this option is not set, the qualify_domain value is used.
+
+# qualify_recipient =
+
+# Specify your local domains as a colon-separated list here. If this option
+# is not set (i.e. not mentioned in the configuration file), the
+# qualify_recipient value is used as the only local domain. If you do not want
+# to do any local deliveries, uncomment the following line, but do not supply
+# any data for it. This sets local_domains to an empty string, which is not
+# the same as not mentioning it at all. An empty string specifies that there
+# are no local domains; not setting it at all causes the default value (the
+# setting of qualify_recipient) to be used.
+
+
+# Allow mail addressed to our hostname, or to our IP address.
+
+
+# Domains we relay for; that is domains that aren't considered local but we 
+# accept mail for them.
+
+#relay_domains = 
+
+# If this is uncommented, we accept and relay mail for all domains we are 
+# in the DNS as an MX for.
+
+#relay_domains_include_local_mx = true
+
+# No local deliveries will ever be run under the uids of these users (a colon-
+# separated list). An attempt to do so gets changed so that it runs under the
+# uid of "nobody" instead. This is a paranoic safety catch. Note the default
+# setting means you cannot deliver mail addressed to root as if it were a
+# normal user. This isn't usually a problem, as most sites have an alias for
+# root that redirects such mail to a human administrator.
+
+never_users = root
+
+# The setting below causes Exim to do a reverse DNS lookup on all incoming
+# IP calls, in order to get the true host name. If you feel this is too
+# expensive, you can specify the networks for which a lookup is done, or
+# remove the setting entirely.
+
+host_lookup = *
+
+# Exim contains support for the Realtime Blocking List (RBL) that is being 
+# maintained as part of the DNS. See http://maps.vix.com/rbl/ for background.
+# Uncommenting the following line will make Exim reject mail from any
+# host whose IP address is blacklisted in the RBL at maps.vix.com.
+
+#rbl_domains = rbl.maps.vix.com
+#rbl_reject_recipients = false
+#rbl_warn_header = true
+
+# The setting below allows your host to be used as a mail relay only by
+# localhost: it locks out the use of your host as a mail relay by any
+# other host. See the section of the manual entitled "Control of relaying" 
+# for more info.
+
+
+# If you want Exim to support the "percent hack" for all your local domains,
+# uncomment the following line. This is the feature by which mail addressed
+# to x%y@z (where z is one of your local domains) is locally rerouted to
+# x@y and sent on. Otherwise x%y is treated as an ordinary local part
+
+# percent_hack_domains=*
+
+# If this option is set, then any process that is running as one of the
+# listed users may pass a message to Exim and specify the sender's
+# address using the "-f" command line option, without Exim's adding a
+# "Sender" header.
+
+trusted_users = mail
+
+# If this option is true, the SMTP command VRFY is supported on incoming
+# SMTP connections; otherwise it is not.
+
+
+# Some operating systems use the "gecos" field in the system password file
+# to hold other information in addition to users' real names. Exim looks up
+# this field when it is creating "sender" and "from" headers. If these options
+# are set, exim uses "gecos_pattern" to parse the gecos field, and then
+# expands "gecos_name" as the user's name. $1 etc refer to sub-fields matched
+# by the pattern.
+
+gecos_pattern = ^([^,:]*)
+gecos_name = $1
+
+# This sets the maximum number of messages that will be accepted in one
+# connection. The default is 10, which is probably enough for most purposes,
+# but is too low on dialup SMTP systems, which often have many more mails
+# queued for them when they connect.
+
+smtp_accept_queue_per_connection = 100
+
+# Send a mail to the postmaster when a message is frozen. There are many
+# reasons this could happen; one is if exim cannot deliver a mail with no
+# return address (normally a bounce) another that may be common on dialup
+# systems is if a DNS lookup of a smarthost fails. Read the documentation
+# for more details: you might like to look at the auto_thaw option
+
+#!!# freeze_tell_mailmaster replaced by freeze_tell
+freeze_tell = postmaster
+
+# This string defines the contents of the \`Received' message header that
+# is added to each message, except for the timestamp, which is automatically
+# added on at the end, preceded by a semicolon. The string is expanded each
+# time it is used.
+
+received_header_text = "Received: \
+         ${if def:sender_rcvhost {from ${sender_rcvhost}\n\t}\
+         {${if def:sender_ident {from ${sender_ident} }}\
+         ${if def:sender_helo_name {(helo=${sender_helo_name})\n\t}}}}\
+         by ${primary_hostname} \
+         ${if def:received_protocol {with ${received_protocol}}} \
+         (Exim ${version_number} #${compile_number} (Debian))\n\t\
+         id ${message_id}\
+         ${if def:received_for {\n\tfor <$received_for>}}"
+
+#!!#######################################################!!#
+#!!# This new section of the configuration contains ACLs #!!#
+#!!# (Access Control Lists) derived from the Exim 3      #!!#
+#!!# policy control options.                             #!!#
+#!!#######################################################!!#
+
+#!!# These ACLs are crudely constructed from Exim 3 options.
+#!!# They are almost certainly not optimal. You should study
+#!!# them and rewrite as necessary.
+
+begin acl
+
+#!!# ACL that is used after the RCPT command
+check_recipient:
+  # Exim 3 had no checking on -bs messages, so for compatibility
+  # we accept if the source is local SMTP (i.e. not over TCP/IP).
+  # We do this by testing for an empty sending host field.
+  accept  hosts = :
+  accept  domains = +local_domains
+  accept  hosts = +relay_hosts
+  deny    message = relay not permitted
+
+#!!# ACL that is used after the DATA command
+check_message:
+  accept
+
+#####################################################################
+#		AUTHENTICATION CONFIGURATION			    #
+#####################################################################
+
+
+begin authenticators
+
+plain:
+	driver = plaintext
+	public_name = LOGIN
+	client_send = blutgens : quo7quee
+
+
+
+######################################################################
+#                      REWRITE CONFIGURATION                         #
+######################################################################
+
+
+# There are no rewriting specifications in this default configuration file.
+
+
+# This is an example of a useful rewriting rule---it looks up the real
+# address of all local users in a file
+
+# *@rtfm.sistina.com    ${lookup{$1}lsearch{/etc/email-addresses}\
+#						{$value}fail} bcfrF
+
+begin rewrite
+
+*@rtfm.sistina.com $1@sistina.com Ffrs
+
+#!!#######################################################!!#
+#!!# Here follow routers created from the old routers,   #!!#
+#!!# for handling non-local domains.                     #!!#
+#!!#######################################################!!#
+
+begin routers
+
+
+
+######################################################################
+#                      ROUTERS CONFIGURATION                         #
+#            Specifies how remote addresses are handled              #
+######################################################################
+#                          ORDER DOES MATTER                         #
+#  A remote address is passed to each in turn until it is accepted.  #
+######################################################################
+
+# Remote addresses are those with a domain that does not match any item
+# in the "local_domains" setting above.
+
+# Send all mail to a smarthost
+
+smarthost:
+  driver = manualroute
+  domains = ! +local_domains
+  route_list = * mail.sistina.com bydns
+  transport = remote_smtp
+  no_more
+
+
+#!!#######################################################!!#
+#!!# Here follow routers created from the old directors, #!!#
+#!!# for handling local domains.                         #!!#
+#!!#######################################################!!#
+
+
+######################################################################
+#                      DIRECTORS CONFIGURATION                       #
+#             Specifies how local addresses are handled              #
+######################################################################
+#                          ORDER DOES MATTER                         #
+#   A local address is passed to each in turn until it is accepted.  #
+######################################################################
+
+# This allows local delivery to be forced, avoiding alias files and
+# forwarding.
+
+real_local:
+#!!# prefix renamed local_part_prefix
+  driver = accept
+  check_local_user
+  local_part_prefix = real-
+  transport = local_delivery
+
+# This director handles aliasing using a traditional /etc/aliases file.
+# If any of your aliases expand to pipes or files, you will need to set
+# up a user and a group for these deliveries to run under. You can do
+# this by uncommenting the "user" option below (changing the user name
+# as appropriate) and adding a "group" option if necessary.
+
+system_aliases:
+  driver = redirect
+  allow_defer
+  allow_fail
+  data = ${lookup{$local_part}lsearch{/etc/aliases}}
+  file_transport = address_file
+  pipe_transport = address_pipe
+  retry_use_local_part
+# user = list
+# Uncomment the above line if you are running smartlist
+
+# This director handles forwarding using traditional .forward files.
+# It also allows mail filtering when a forward file starts with the 
+# string "# Exim filter": to disable filtering, uncomment the "filter" 
+# option. The check_ancestor option means that if the forward file 
+# generates an address that is an ancestor of the current one, the 
+# current one gets passed on instead. This covers the case where A is 
+# aliased to B and B has a .forward file pointing to A.
+
+# For standard debian setup of one group per user, it is acceptable---normal
+# even---for .forward to be group writable. If you have everyone in one
+# group, you should comment out the "modemask" line. Without it, the exim
+# default of 022 will apply, which is probably what you want.
+
+userforward:
+#!!# filter renamed allow_filter
+  driver = redirect
+  allow_filter
+  check_ancestor
+  check_local_user
+  file = $home/.forward
+  directory_transport = address_directory
+  modemask = 002
+  user = ${local_part}
+  pipe_transport = address_pipe
+  reply_transport = address_reply
+  no_verify
+
+# This director matches local user mailboxes.
+
+localuser:
+  driver = accept
+  check_local_user
+  transport = local_delivery
+
+
+
+######################################################################
+#                      TRANSPORTS CONFIGURATION                      #
+######################################################################
+#                       ORDER DOES NOT MATTER                        #
+#     Only one appropriate transport is called for each delivery.    #
+######################################################################
+
+# This transport is used for local delivery to user mailboxes. On debian
+# systems group mail is used so we can write to the /var/spool/mail
+# directory. (The alternative, which most other unixes use, is to deliver
+# as the user's own group, into a sticky-bitted directory)
+
+begin transports
+
+local_delivery:
+  driver = appendfile
+  envelope_to_add
+  maildir_format
+  directory  = /home/${local_part}/.maildir/
+  group = mail
+  mode = 0660
+  no_mode_fail_narrower
+
+# This transport is used for handling pipe addresses generated by alias
+# or .forward files. It has a conventional name, since it is not actually
+# mentioned elsewhere in this configuration file. (A different name *can*
+# be specified via the "address_pipe_transport" option if you really want
+# to.) If the pipe generates any standard output, it is returned to the sender
+# of the message as a delivery error. Set return_fail_output instead if you
+# want this to happen only when the pipe fails to complete normally.
+
+address_pipe:
+  driver = pipe
+  return_output
+
+# This transport is used for handling file addresses generated by alias
+# or .forward files. It has a conventional name, since it is not actually
+# mentioned elsewhere in this configuration file.
+
+address_file:
+  driver = appendfile
+
+address_directory:
+	driver = appendfile
+	maildir_format
+# This transport is used for handling file addresses generated by alias
+# or .forward files if the path ends in "/", which causes it to be treated
+# as a directory name rather than a file name. Each message is then delivered
+# to a unique file in the directory. If instead you want all such deliveries to
+# be in the "maildir" format that is used by some other mail software,
+# uncomment the final option below. If this is done, the directory specified
+# in the .forward or alias file is the base maildir directory.
+#
+# Should you want to be able to specify either maildir or non-maildir
+# directory-style deliveries, then you must set up yet another transport,
+# called address_directory2. This is used if the path ends in "//" so should
+# be the one used for maildir, as the double slash suggests another level
+# of directory. In the absence of address_directory2, paths ending in //
+# are passed to address_directory.
+
+address_directory:
+#!!# prefix renamed message_prefix
+#!!# suffix renamed message_suffix
+#!!# no_from_hack replaced by check_string
+  driver = appendfile
+  check_string = 
+  message_prefix = ""
+  message_suffix = ""
+#  maildir_format
+
+# This transport is used for handling autoreplies generated by the filtering
+# option of the forwardfile director. It has a conventional name, since it
+# is not actually mentioned elsewhere in this configuration file.
+
+address_reply:
+  driver = autoreply
+
+# This transport is used for delivering messages over SMTP connections.
+remote_smtp:
+#!!# authenticate_hosts renamed hosts_try_auth
+  driver = smtp
+  hosts_try_auth = *
+
+
+
+######################################################################
+#                      RETRY CONFIGURATION                           #
+######################################################################
+
+# This single retry rule applies to all domains and all errors. It specifies
+# retries every 15 minutes for 2 hours, then increasing retry intervals,
+# starting at 2 hours and increasing each time by a factor of 1.5, up to 16
+# hours, then retries every 8 hours until 4 days have passed since the first
+# failed delivery.
+
+# Domain               Error       Retries
+# ------               -----       -------
+
+
+begin retry
+
+*                      *           F,2h,15m; G,16h,2h,1.5; F,4d,8h
+
+
+# End of Exim 4 configuration