Hello,
I have a problem with Administrative prohibition with exim.
I have two smtp servers with exim. Those are in a DMZ, which network is
10.2.4.0. I want this 2 stmp servers to clean mails and to send them
inside my society LAN. The principal MX is an old sendmail inside.
I want to use Spamassassin and Clamav.
I verified my firewall's logs and nothing is wrong.
Here is my config file for exim.
#!!# 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 : \
smtp001.XXXX.fr
domainlist relay_domains = XXXX.fr : \
XXXX.com
hostlist rbl_hosts = !10.0.0.0 : \ 0.0.0.0/0
hostlist relay_hosts = 127.0.0.1 : \
::::1
hostlist auth_relay_hosts = *
# This is the main exim configuration file.
# It was originally generated by `eximconfig', part of the exim package
# distributed with Debian, but it may edited by the mail system
administrator.
# This file originally generated by eximconfig at Fri Feb 11 20:19:07
CET 2005
# 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 #
######################################################################
#!!# message_filter renamed system_filter
system_filter = /etc/exim4/system_filter.exim
message_body_visible = 5000
#!!# message_filter_reply_transport renamed system_filter_reply_transport
system_filter_reply_transport = address_reply
av_scanner = clamd:/usr/local/sbin/clamd
# 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.
qualify_domain = smtp001.XXXX.fr
# 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.
# 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 = false
# 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 = *
# The setting below would, if uncommented, cause Exim to check the
syntax of
# all the headers that are supposed to contain email addresses (To:, From:,
# etc). This reduces the level of bounced bounces considerably.
# headers_check_syntax
# Exim contains support for the Realtime Blocking List (RBL), and the many
# similar services that are being maintained as part of the DNS. See
#
http://www.mail-abuse.org/ for background. The line below, if
uncommented,
# will reject mail from hosts in the RBL, and add warning headers to mail
# from hosts in a list of dynamic-IP dialups. Note that MAPS may charge
# for this service.
#
http://www.rfc-ignorant.org is another interesting site with a number of
# services you can use with the rbl_domains option
# 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.
# This setting allows anyone who has authenticated to use your host as a
# mail relay. To use this you will need to set up some authenticators at
# the end of the file
# 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 and immediately delivered. If one connection sends more
# messages than this, any further ones are accepted and queued but not
# delivered. 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>}}"
# Attempt to verify recipient address before receiving mail, so that mails
# to invalid addresses are rejected rather than accepted and then bounced.
# Apparently some spammers are abusing servers that accept and then bounce
# to send bounces containing their spam to people.
# This would make exim advertise the 8BIT-MIME option. According to
# RFC1652, this means it will take an 8bit message, and ensure it gets
# delivered correctly. exim won't do this: it is entirely 8bit clean
# but won't do any conversion if the next hop isn't. Therefore, if you
# set this option you are asking exim to lie and not be RFC
# compliant. But some people want it.
#accept_8bitmime = true
# This will cause it to accept mail only from the local interface
#local_interfaces = 127.0.0.1
# If this next line is uncommented, any user can see the mail queue
# by using the mailq command or exim -bp.
#queue_list_requires_admin = false
#
#!!#######################################################!!#
#!!# 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 = :
deny hosts = +rbl_hosts
message = host is listed in $dnslist_domain
dnslists = rbl.mail-abuse.org
warn hosts = +rbl_hosts
message = X-Warning: $sender_host_address is listed at $dnslist_domain
dnslists = dialups.mail-abuse.org
accept domains = +local_domains
accept domains = +relay_domains
accept hosts = +relay_hosts
accept hosts = +auth_relay_hosts
endpass
message = authentication required
authenticated = *
deny message = relay not permitted
# OLD SECTION
#!!# ACL that is used after the DATA command
#check_message:
# accept
#########
#!!# ACL that is used after the DATA command
check_message:
require verify = header_sender
##### clamav ACL, reject virus infected mails with proper error
deny message = This message contains malformed MIME ($demime_reason).
demime = *
condition = ${if >{$demime_errorlevel}{2}{1}{0}}
deny message = This message contains a virus or other harmful content \
($malware_name)
demime = *
malware = *
deny message = Potentially executable content. If you meant to send this
file \
then please package it up as a zip file and resend it.
demime =
ade:adp:bas:bat:chm:cmd:com:cpl:crt:eml:exe:hlp:hta:inf:ins:isp:jse:lnk:mdb:mde:msc:msi:msp:pcd:reg:s
cr:sct:shs:url:vbs:vbe:wsf:wsh:wsc
# Add X-Scanned Header
warn message = X-Antivirus-Scanner: Clean mail though you should still
use an Antivirus
##### end clamav ACL
accept
######################################################################
# AUTHENTICATION CONFIGURATION #
######################################################################
# Look in the documentation (in package exim-doc or exim-doc-html for
# information on how to set up authenticated connections.
# The examples below are for server side authentication; they allow two
# styles of plain-text authentication against an /etc/exim/passwd file
# which should have user IDs in the first column and crypted passwords
# in the second.
# plain:
# driver = plaintext
# public_name = PLAIN
# server_condition = "${if
crypteq{$2}{${extract{1}{:}{${lookup{$1}lsearch{/etc/exim/passwd}{$value}{*:*}}}}
}{1}{0}}"
# server_set_id = $1
#
# login:
# driver = plaintext
# public_name = LOGIN
# server_prompts = "Username:: : Password::"
# server_condition = "${if
crypteq{$2}{${extract{1}{:}{${lookup{$1}lsearch{/etc/exim/passwd}{$value}{*:*}}}}
}{1}{0}}"
# server_set_id = $1
# These examples below are the equivalent for client side authentication.
# They assume that you only use client side authentication to connect to
# one host (such as a smarthost at your ISP), or else use the same user
# name and password everywhere
# plain:
# driver = plaintext
# public_name = PLAIN
# client_send = "^username^password"
#
# login:
# driver = plaintext
# public_name = LOGIN
# client_send = ": username : password"
#
# cram_md5:
# driver = cram_md5
# public_name = CRAM-MD5
# client_name = username
# client_secret = password
######################################################################
# REWRITE CONFIGURATION #
######################################################################
# There are no rewriting specifications in this default configuration file.
# This rewriting rule is particularly useful for dialup users who
# don't have their own domain, but could be useful for anyone.
# It looks up the real address of all local users in a file
begin rewrite
*@smtp001.XXXX.fr ${lookup{$1}lsearch{/etc/email-addresses}\
{$value}fail} frFs
#!!#######################################################!!#
#!!# 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-001.XXXX.fr bydns
transport = remote_smtp
no_more
# Spam Assassin
spamcheck_router:
no_verify
check_local_user
# When to scan a message :
# - it isn't already flagged as spam
# - it isn't already scanned
condition = \
"${if and { {!def:h_X-Spam-Flag:} \
{!eq {$received_protocol}{spam-scanned}} \
}\
{1}{0}\
}"
driver = accept
transport = spamcheck
#!!#######################################################!!#
#!!# 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
# file_transport = address_file
# modemask = 002
# pipe_transport = address_pipe
# reply_transport = address_reply
# no_verify
# This director runs procmail for users who have a .procmailrc file
#procmail:
driver = accept
check_local_user
require_files =
${local_part}:+${home}:+${home}/.procmailrc:+/usr/bin/procmail
transport = procmail_pipe
no_verify
# This director matches local user mailboxes.
#localuser:
#driver = accept
#check_local_user
#transport = local_delivery
######################################################################
# TRANSPORTS CONFIGURATION #
######################################################################
# ORDER DOES NOT MATTER #
# Only one appropriate transport is called for each delivery. #
######################################################################
# This transport is used for local delivery to user mailboxes. On debian
# systems group mail is used so we can write to the /var/spool/mail
# directory. (The alternative, which most other unixes use, is to deliver
# as the user's own group, into a sticky-bitted directory)
begin transports
local_delivery:
driver = appendfile
envelope_to_add
file = /var/spool/mail/${local_part}
group = mail
mode = 0660
no_mode_fail_narrower
return_path_add
# This transport is used for handling pipe addresses generated by
# alias or .forward files. 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
path = /usr/bin:/bin:/usr/local/bin
return_output
# This transport is used for handling file addresses generated by alias
# or .forward files.
address_file:
driver = appendfile
envelope_to_add
return_path_add
# 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.
address_reply:
driver = autoreply
# This transport is used for procmail
procmail_pipe:
#!!# suffix renamed message_suffix
driver = pipe
command = "/usr/bin/procmail"
delivery_date_add
envelope_to_add
message_suffix = ""
return_path_add
# check_string = "From "
# escape_string = ">From "
# This transport is used for delivering messages over SMTP connections.
remote_smtp:
driver = smtp
# authenticate_hosts = smarthost.isp.com
# To use SMTP AUTH when sending to a particular host, such as your ISP's
# smarthost, uncomment and edit the above line, and also the example
# client-side authenticators at the bottom of the file
# Spam Assassin
spamcheck:
driver = pipe
command = /usr/exim/bin/exim -oMr spam-scanned -bS
use_bsmtp = true
transport_filter = /usr/bin/spamc
home_directory = "/tmp"
current_directory = "/tmp"
# must use a privileged user to set $received_protocol on the way
# back in!
user = mail
group = mail
log_output = true
return_fail_output = true
return_path_add = false
message_prefix =
message_suffix =
######################################################################
# 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
Here is now my exim log after a telnet connection from smtp2 to smtp1
SMPT1:
Start queue run: pid=858
2005-02-22 14:52:15 End queue run: pid=858
2005-02-22 14:53:01 1D3aTB-0000Dr-1v H=smtp002 (smpt001) [10.2.4.2]
U=root F=<frhuet@???> rejected after DATA: there is no valid sender
in any header line
and my connection from smtp2 to smtp2 (I have the same message for all
kind of connection):
smtp002:~# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 smtp002 ESMTP Exim 4.34 Tue, 22 Feb 2005 15:59:22 +0100
ehlo smtp002
250-smtp002 Hello root at localhost [127.0.0.1]
250-SIZE 52428800
250-PIPELINING
250 HELP
mail from: frhuet@???
250 OK
rcpt to: fhuet@???
250 Accepted
data
354 Enter message, ending with "." on a line by itself
bla blo blu
.
550 Administrative prohibition
What's wrong ??
Thankx for a newbie in exim's world
Franck
