[Exim] making Exim recognise extended addresses?

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Autor: Dan Egli
Data:  
Para: exim-users
Assunto: [Exim] making Exim recognise extended addresses?
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Ok. I recently had to reinstall my system after the root partition died
(don't ask me how, I don't know!). I got exim setup again, and it looked
good at first, till I tried to verify my TMDA extended addresses.

[root@shortcircuit root]# exim -oMr scanned-ok -bv
dan-dated-1058367649.ba737f@???

dan-dated-1058367649.ba737f@??? failed to verify:
Unrouteable address

but dan@??? works fine. Am I missing something? I
have included my exim.conf below, I'm running Exim 4.20 on RedHat 8.

Thanks!
--- Dan

######################################################################
#                  Runtime configuration file for Exim               #
######################################################################



# This is a default configuration file which will operate correctly in
# uncomplicated installations. Please see the manual for a complete list
# of all the runtime configuration options that can be included in a
# configuration file. There are many more than are mentioned here. The
# manual is in the file doc/spec.txt in the Exim distribution as a plain
# ASCII file. Other formats (PostScript, Texinfo, HTML, PDF) are available
# from the Exim ftp sites. The manual is also online at the Exim web sites.


# This file is divided into several parts, all but the first of which are
# headed by a line starting with the word "begin". Only those parts that
# are required need to be present. Blank lines, and lines starting with #
# are ignored.


########### IMPORTANT ########## IMPORTANT ########### IMPORTANT ###########
#                                                                          #
# Whenever you change Exim's configuration file, you *must* remember to    #
# HUP the Exim daemon, because it will not pick up the new configuration   #
# until you do. However, any other Exim processes that are started, for    #
# example, a process started by an MUA in order to send a message, will    #
# see the new configuration as soon as it is in place.                     #
#                                                                          #
# You do not need to HUP the daemon for changes in auxiliary files that    #
# are referenced from this file. They are read every time they are used.   #
#                                                                          #
# It is usually a good idea to test a new configuration for syntactic      #
# correctness before installing it (for example, by running the command    #
# "exim -C /config/file.new -bV").                                         #
#                                                                          #
########### IMPORTANT ########## IMPORTANT ########### IMPORTANT ###########




######################################################################
#                    MAIN CONFIGURATION SETTINGS                     #
######################################################################


# Specify your host's canonical name here. This should normally be the fully
# qualified "official" name of your host. If this option is not set, the
# uname() function is called to obtain the name. In many cases this does
# the right thing and you need not set anything explicitly.

primary_hostname = shortcircuit.dyndns.org

trusted_users = root:dan:amavis

# The next three settings create two lists of domains and one list of hosts.
# These lists are referred to later in this configuration using the syntax
# +local_domains, +relay_to_domains, and +relay_from_hosts,
respectively. They
# are all colon-separated lists:

domainlist local_domains = @:shortcircuit.dyndns.org
domainlist relay_to_domains = thedungeon.dnsalias.org
hostlist relay_from_hosts = 127.0.0.1:192.168.0.0/24

# Most straightforward access control requirements can be obtained by
# appropriate settings of the above options. In more complicated
situations, you
# may need to modify the Access Control List (ACL) which appears later
in this
# file.

# The first setting specifies your local domains, for example:
#
# domainlist local_domains = my.first.domain : my.second.domain
#
# You can use "@" to mean "the name of the local host", as in the default
# setting above. This is the name that is specified by primary_hostname,
# as specified above (or defaulted). If you do not want to do any local
# deliveries, remove the "@" from the setting above. If you want to
accept mail
# addressed to your host's literal IP address, for example, mail
addressed to
# "user@???", you can add "@[]" as an item in the local domains
# list. You also need to uncomment "allow_domain_literals" below. This
is not
# recommended for today's Internet.

# The second setting specifies domains for which your host is an
incoming relay.
# If you are not doing any relaying, you should leave the list empty.
However,
# if your host is an MX backup or gateway of some kind for some domains, you
# must set relay_to_domains to match those domains. For example:
#
# domainlist relay_to_domains = *.myco.com : my.friend.org
#
# This will allow any host to relay through your host to those domains.
# See the section of the manual entitled "Control of relaying" for more
# information.

# The third setting specifies hosts that can use your host as an
outgoing relay
# to any other host on the Internet. Such a setting commonly refers to a
# complete local network as well as the localhost. For example:
#
# hostlist relay_from_hosts = 127.0.0.1 : 192.168.0.0/16
#
# The "/16" is a bit mask (CIDR notation), not a number of hosts. Note
that you
# have to include 127.0.0.1 if you want to allow processes on your host
to send
# SMTP mail by using the loopback address. A number of MUAs use this
method of
# sending mail.


# All three of these lists may contain many different kinds of item,
including
# wildcarded names, regular expressions, and file lookups. See the reference
# manual for details. The lists above are used in the access control
list for
# incoming messages. The name of this ACL is defined here:

acl_smtp_rcpt = acl_check_rcpt

# You should not change that setting until you understand how ACLs work.

hide mysql_servers = <hidden>

# Specify the domain you want to be added to all unqualified addresses
# here. An unqualified address is one that does not contain an "@" character
# followed by a domain. For example, "caesar@???" is a fully
qualified
# address, but the string "caesar" (i.e. just a login name) is an
unqualified
# email address. Unqualified addresses are accepted only from local
callers by
# default. See the recipient_unqualified_hosts option 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 =


# 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 =


# The following line must be uncommented if you want Exim to recognize
# addresses of the form "user@???" that is, with a "domain
literal"
# (an IP address) instead of a named domain. The RFCs still require this
form,
# but it makes little sense to permit mail to be sent to specific hosts by
# their IP address in the modern Internet. This ancient format has been used
# by those seeking to abuse hosts by using them for unwanted relaying.
If you
# really do want to support domain literals, uncomment the following
line, and
# see also the "domain_literal" router below.

# allow_domain_literals


# No deliveries will ever be run under the uids of these users (a colon-
# separated list). An attempt to do so causes a panic error to be
logged, and
# the delivery to be deferred. This is a paranoic safety catch. Note
that 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 settings below, which are actually the same as the defaults in the
# code, cause Exim to make RFC 1413 (ident) callbacks for all incoming SMTP
# calls. You can limit the hosts to which these calls are made, and/or
change
# the timeout that is used. If you set the timeout to zero, all RFC 1413
calls
# are disabled. RFC 1413 calls are cheap and can provide useful information
# for tracing problem messages, but some hosts and firewalls have problems
# with them. This can result in a timeout instead of an immediate refused
# connection, leading to delays on starting up an SMTP session.

rfc1413_hosts = *
rfc1413_query_timeout = 30s


# By default, Exim expects all envelope addresses to be fully qualified,
that
# is, they must contain both a local part and a domain. If you want to
accept
# unqualified addresses (just a local part) from certain hosts, you can
specify
# these hosts by setting one or both of
#
# sender_unqualified_hosts =
# recipient_unqualified_hosts =
#
# to control sender and recipient addresses, respectively. When this is
done,
# unqualified addresses are qualified using the settings of qualify_domain
# and/or qualify_recipient (see above).


# If you want Exim to support the "percent hack" for certain domains,
# uncomment the following line and provide a list of domains. The "percent
# hack" is the feature by which mail addressed to x%y@z (where z is one of
# the domains listed) is locally rerouted to x@y and sent on. If z is
not one
# of the "percent hack" domains, x%y is treated as an ordinary local
part. This
# hack is rarely needed nowadays; you should not enable it unless you
are sure
# that you really need it.
#
# percent_hack_domains =
#
# As well as setting this option you will also need to remove the test
# for local parts containing % in the ACL definition below.


# When Exim can neither deliver a message nor return it to sender, it
"freezes"
# the delivery error message (aka "bounce message"). There are also other
# circumstances in which messages get frozen. They will stay on the
queue for
# ever unless one of the following options is set.

# This option unfreezes frozen bounce messages after two days, tries
# once more to deliver them, and ignores any delivery failures.

ignore_bounce_errors_after = 1d

# This option cancels (removes) frozen messages that are older than a week.

timeout_frozen_after = 1d



######################################################################
#                       ACL CONFIGURATION                            #
#         Specifies access control lists for incoming SMTP mail      #
######################################################################


begin acl

# This access control list is used for every RCPT command in an incoming
# SMTP message. The tests are run in order until the address is either
# accepted or denied.

acl_check_rcpt:

# 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 if the local part contains @ or % or / or | or !. These are rarely
# found in genuine local parts, but are often tried by people looking to
# circumvent relaying restrictions.

# Also deny if the local part starts with a dot. Empty components aren't
# strictly legal in RFC 2822, but Exim allows them because this is
common.
# However, actually starting with a dot may cause trouble if the
local part
# is used as a file name (e.g. for a mailing list).

   deny    local_parts   = ^.*[@%!/|] : ^\\.


# Accept mail to postmaster in any local domain, regardless of the
source,
# and without verifying the sender.

   accept  local_parts   = postmaster
           domains       = +local_domains


# Deny unless the sender address can be verified.

   require verify        = sender



#############################################################################
   # There are no checks on DNS "black" lists because the domains that
contain
   # these lists are changing all the time. However, here are two
examples of
   # how you could get Exim to perform a DNS black list lookup at this
point.
   # The first one denies, while the second just warns.
   #
   # deny    message       = rejected because $sender_host_address is in
a black list at $dnslist_domain\n$dnslist_text
   #         dnslists      = black.list.example
   #
   # warn    message       = X-Warning: $sender_host_address is in a
black list at $dnslist_domain
   #         log_message   = found in $dnslist_domain
   #         dnslists      = black.list.example


#############################################################################

# Accept if the address is in a local domain, but only if the
recipient can
# be verified. Otherwise deny. The "endpass" line is the border between
# passing on to the next ACL statement (if tests above it fail) or
denying
# access (if tests below it fail).

   accept  domains       = +local_domains
           endpass
           message       = unknown user
           verify        = recipient


# Accept if the address is in a domain for which we are relaying, but
again,
# only if the recipient can be verified.

   accept  domains       = +relay_to_domains
           endpass
           message       = unrouteable address
           verify        = recipient


# If control reaches this point, the domain is neither in +local_domains
# nor in +relay_to_domains.

# Accept if the message comes from one of the hosts for which we are an
# outgoing relay. Recipient verification is omitted here, because in many
# cases the clients are dumb MUAs that don't cope well with SMTP error
# responses. If you are actually relaying out from MTAs, you should
probably
# add recipient verification here.

   accept  hosts         = +relay_from_hosts


# Accept if the message arrived over an authenticated connection, from
# any host. Again, these messages are usually from MUAs, so recipient
# verification is omitted.

accept authenticated = *

# Reaching the end of the ACL causes a "deny", but we might as well give
# an explicit message.

   deny    message       = relay not permitted




######################################################################
#                      ROUTERS CONFIGURATION                         #
#               Specifies how addresses are handled                  #
######################################################################
#     THE ORDER IN WHICH THE ROUTERS ARE DEFINED IS IMPORTANT!       #
# An address is passed to each router in turn until it is accepted.  #
######################################################################


begin routers

# This router routes to remote hosts over SMTP by explicit IP address,
# when an email address is given in "domain literal" form, for example,
# <user@???>. The RFCs require this facility. However, it is
# little-known these days, and has been exploited by evil people seeking
# to abuse SMTP relays. Consequently it is commented out in the default
# configuration. If you uncomment this router, you also need to uncomment
# allow_domain_literals above, so that Exim can recognize the syntax of
# domain literal addresses.

# domain_literal:
# driver = ipliteral
# domains = ! +local_domains
# transport = remote_smtp

amavis_router:
condition = "${if eq {$received_protocol}{scanned-ok} {0}{1}}"
driver = accept
transport = amavis
# verify must be set to false, to avoid troubles with receiver and/or
# sender verify
verify = false

# This router routes addresses that are not in local domains by doing a DNS
# lookup on the domain name. Any domain that resolves to 0.0.0.0 or to a
# loopback interface address (127.0.0.0/8) is treated as if it had no DNS
# entry. Note that 0.0.0.0 is the same as 0.0.0.0/32, which is commonly
treated
# as the local host inside the network stack. It is not 0.0.0.0/0, the
default
# route. If the DNS lookup fails, no further routers are tried because of
# the no_more setting, and consequently the address is unrouteable.

route_override:
driver = manualroute
domains = ! +local_domains
transport = remote_smtp
route_data = ${lookup{$domain}partial-lsearch{/etc/direct-route}}


dnslookup:
driver = dnslookup
domains = ! +local_domains
transport = remote_smtp
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more


# The remaining routers handle addresses in the local domain(s).


# This router handles aliasing using a linearly searched alias file with the
# name SYSTEM_ALIASES_FILE. When this configuration is installed
automatically,
# the name gets inserted into this file from whatever is set in Exim's
# build-time configuration. The default path is the traditional
/etc/aliases.
# If you install this configuration by hand, you need to specify the correct
# path in the "data" setting below.
#
##### NB You must ensure that the alias file exists. It used to be the case
##### NB that every Unix had that file, because it was the Sendmail
default.
##### NB These days, there are systems that don't have it. Your aliases
##### NB file should at least contain an alias for "postmaster".
#
# 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.
Alternatively, you
# can specify "user" on the transports that are used. Note that the
transports
# listed below are the same as are used for .forward files; you might want
# to set up different ones for pipe and file deliveries from aliases.

system_aliases:
driver = redirect
allow_fail
allow_defer
data = ${lookup{$local_part}lsearch{/etc/aliases}}
# user = exim
file_transport = address_file
pipe_transport = address_pipe


# This router handles forwarding using traditional .forward files in users'
# home directories. If you want it also to allow mail filtering when a
forward
# file starts with the string "# Exim filter", uncomment the "allow_filter"
# option.

# The no_verify setting means that this router is skipped when Exim is
# verifying addresses. Similarly, no_expn means that this router is
skipped if
# Exim is processing an EXPN command.

# 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.

# The three transports specified at the end are those that are used when
# forwarding generates a direct delivery to a file, or to a pipe, or sets
# up an auto-reply, respectively.

userforward:
driver = redirect
check_local_user
file = $home/.forward
no_verify
no_expn
check_ancestor
# allow_filter
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
local_part_suffix = -*
local_part_suffix_optional

# Ok. No .forward, so let's look for some procmail configs
procmail_director:
driver = accept
check_local_user
no_verify
no_expn
user = ${local_part}
require_files = ${home}/.procmailrc
transport = procmail_transport
local_part_suffix = -*
local_part_suffix_optional

# no procmail either, eh? Ok, so deliver to their /var/spool/mail/<user>
# file instead.

localuser:
driver = accept
check_local_user
transport = local_delivery



######################################################################
#                      TRANSPORTS CONFIGURATION                      #
######################################################################
#                       ORDER DOES NOT MATTER                        #
#     Only one appropriate transport is called for each delivery.    #
######################################################################


# A transport is used only when referenced from a router that successfully
# handles an address.

begin transports


# This transport is used for delivering messages over SMTP connections.

remote_smtp:
driver = smtp


# Procmail transport
procmail_transport:
   driver = pipe
   command = "/usr/bin/procmail -p"
   delivery_date_add
   envelope_to_add
   no_freeze_exec_fail
   group = mail
   no_log_defer_output
   no_log_fail_output
   no_log_output
   no_return_fail_output
   no_return_output
   return_path_add
   umask = 0022
   environment = EXTENSION=${substr_1:$local_part_suffix}:\
                 RECIPIENT=$local_part$local_part_suffix@$domain




# amavis's transport

amavis:
driver = pipe
command = "/usr/sbin/amavis <${sender_address}> ${pipe_addresses}"
# for debugging change return _output to true
return_output = true
return_path_add = false
user = amavis
group = amavis
path = "/bin:/sbin:/usr/bin:/usr/sbin"
current_directory = "/var/amavis"


# This transport is used for local delivery to user mailboxes in traditional
# BSD mailbox format. By default it will be run under the uid and gid of the
# local user, and requires the sticky bit to be set on the /var/mail
directory.
# Some systems use the alternative approach of running mail deliveries
under a
# particular group instead of using the sticky bit. The commented
options below
# show how this can be done.

local_delivery:
driver = appendfile
file = /var/mail/$local_part
delivery_date_add
envelope_to_add
return_path_add
# group = mail
# mode = 0660


# This transport is used for handling pipe deliveries 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 of return_output if you want this to happen only when the pipe
fails
# to complete normally. You can set different transports for aliases and
# forwards if you want to - see the references to address_pipe in the
routers
# section above.

address_pipe:
driver = pipe
return_output


# This transport is used for handling deliveries directly to files that are
# generated by aliasing or forwarding.

address_file:
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add


# This transport is used for handling autoreplies generated by the filtering
# option of the userforward router.

address_reply:
driver = autoreply



######################################################################
#                      RETRY CONFIGURATION                           #
######################################################################


begin retry

# 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 1 hour and increasing each time by a factor of 1.5, up to 16
# hours, then retries every 6 hours until 4 days have passed since the first
# failed delivery.

# Domain               Error       Retries
# ------               -----       -------


*               Quota
*                      *           F,3d,15m;




######################################################################
#                      REWRITE CONFIGURATION                         #
######################################################################


# There are no rewriting specifications in this default configuration file.

begin rewrite



######################################################################
#                   AUTHENTICATION CONFIGURATION                     #
######################################################################


# There are no authenticator specifications in this default
configuration file.

begin authenticators

plain:
driver=plaintext
public_name=PLAIN
server_condition = "${if eq{$3} \
{${lookup mysql{SELECT passwd FROM mail \
WHERE uname='${local_part:$2}'}}}{1}{0}}"
server_prompts= "Login::"
server_set_id=$2

login:
driver=plaintext
public_name=LOGIN
server_condition = "${if eq{$2} \
{${lookup mysql{SELECT passwd FROM mail \
WHERE uname='${local_part:$1}'}}}{1}{0}}"
server_prompts= "Username:: Password:: "
server_set_id=$1



######################################################################
#                   CONFIGURATION FOR local_scan()                   #
######################################################################


# If you have built Exim to include a local_scan() function that contains
# tables for private options, you can define those options here. Remember to
# uncomment the "begin" line. It is commented by default because it provokes
# an error with Exim binaries that are not built with LOCAL_SCAN_HAS_OPTIONS
# set in the Local/Makefile.

# begin local_scan


# End of Exim configuration file
--
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--