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Hi all,
I want to run Exim for a great number of messages/day (1 Milion or more)
in a i386 machine.
I installed Exim 3.35 in a Debian GNU/Linux woody server.
The following are the specs(cpu, mem and bogomips):
model name : Intel(R) Pentium(R) 4 CPU 1.70GHz
cpu MHz : 1715.328
bogomips : 3420.97
free
total used free shared buffers cached
Mem: 254972 248740 6232 0 28044 205508
-/+ buffers/cache: 15188 239784
Swap: 506008 0 506008
Exim is configured without any tweaks.
We wrote an small C program to send 200 messages through Exim.
./test
Wed Oct 23 04:11:11 BRST 2002
Wed Oct 23 04:11:49 BRST 2002
The program indicates that Exim can handle only 5 mes/sec! ;(
(200 mes/40s).
This is so bad.
What I can do to improve this number?
I' m atacching the exim.conf too.
Much thanks, Paulo Henrique
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
pid_t send_message(char *file) {
pid_t child = fork();
if (child == 0) {
char *argv[5];
freopen(file,"r",stdin);
fclose(stdout);
argv[0] = "/usr/bin/nc";
argv[1] = "exl";
argv[2] = "25";
argv[3] = NULL;
execv(argv[0],argv);
exit(1);
}
}
int main(int argc, char *argv[]) {
int i,j;
printf("Begin: ");
fflush(stdout);
system("date");
for (i=0; i<1; i++) {
int status;
for (j=0;j<200;j++) {
send_message("182dv4-0001M5-00");
}
for (j=0;j<200;j++) {
printf(".");
fflush(stdout);
wait(&status);
}
}
printf("End: ");
fflush(stdout);
system("date");
--
# 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 Thu Feb 24 15:17:23 EST 2000
# 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 #
######################################################################
# Configuration for exiscan anti-virus
# by Linux Solutions Consulting
#
#message_filter = /etc/exim-mailscanner/exim-mailscanner.filter
#message_filter_pipe_transport = scanmessages
# 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 = teste-linuxsolutions.com.br
# SMTP banner
smtp_banner = "${primary_hostname} ESMTP Exim ${version_number} ${tod_full}\nRunning LinuxSolutions' Exellon -
http://www.exellon.com.br"
# 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 =
headers_check_syntax
# 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.
local_domains = teste-linuxsolutions.com.br:teste3.com.br:linuxsolutions.com.br:lspar.com:lspar.com.br
#local_domains = 0.0.0.0/0
# Allow mail addressed to our hostname, or to our IP address.
local_domains_include_host = true
local_domains_include_host_literals = true
# 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_nets = *
#0.0.0.0/0
# 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 = blackholes.mail-abuse.org
#rbl_reject_recipients = false
#rbl_warn_header = true
# The setting below allows your host to be used as a mail relay by only
# the hosts in the specified networks. See the section of the manual
# entitled "Control of relaying" for more info.
#host_accept_relay = localhost:0.0.0.0/0:200.168.106.123
host_accept_relay = lsearch:/etc/mail/access:localhost
# 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=*
forbid_domain_literals
# 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:www-data:postgres
# If this option is true, the SMTP command VRFY is supported on incoming
# SMTP connections; otherwise it is not.
smtp_verify = true
# 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
smtp_accept_max_per_host = 1000
smtp_accept_max = 1000
# 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>}}"
######################################################################
# TRANSPORTS CONFIGURATION #
######################################################################
# ORDER DOES NOT MATTER #
# Only one appropriate transport is called for each delivery. #
######################################################################
scanmessages:
driver = pipe
path = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/lib"
user = mail
# 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)
local_delivery:
driver = appendfile
group = mail
mode = 0660
mode_fail_narrower = false
envelope_to_add= true
file = /var/spool/mail/${local_part}
# 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
user = $local_part
group = mail
# 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
# 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:
driver = appendfile
no_from_hack
prefix = ""
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 procmail
procmail_pipe:
driver = pipe
command = "/usr/bin/procmail -d ${local_part}"
return_path_add
delivery_date_add
envelope_to_add
check_string = "From "
escape_string = ">From "
user = $local_part
group = mail
# This transport is used for delivering messages over SMTP connections.
remote_smtp:
driver = smtp
transport_number_0:
driver = smtp
hosts_override = true
hosts = make.linuxsolutions.com.br
######################################################################
# DIRECTORS CONFIGURATION #
# Specifies how local addresses are handled #
######################################################################
# ORDER DOES MATTER #
# A local address is passed to each in turn until it is accepted. #
######################################################################
director_number_0:
driver = smartuser
domains = linuxsolutions.com.br
transport = transport_number_0
director_number_1:
driver = smartuser
domains = lspar.com
transport = transport_number_0
director_number_2:
driver = smartuser
domains = lspar.com.br
transport = transport_number_0
# This allows local delivery to be forced, avoiding alias files and
# forwarding.
real_local:
prefix = real-
driver = localuser
transport = local_delivery
# This director handles aliasing using a traditional /etc/aliases file.
# If any of your aliases expand to pipes or files, you will need to set
# up a user and a group for these deliveries to run under. You can do
# this by uncommenting the "user" option below (changing the user name
# as appropriate) and adding a "group" option if necessary.
system_aliases:
driver = aliasfile
file = /etc/mail/$domain/aliases
file_transport = address_file
pipe_transport = address_pipe
search_type = lsearch
user = mail
# 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:
# driver = forwardfile
# no_verify
# check_ancestor
# file = .forward
# modemask = 002
# filter
userforward:
driver = forwardfile
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
no_verify
check_ancestor
file = .forward
modemask = 002
filter
# This director matches local user mailboxes.
localuser:
driver = localuser
transport = local_delivery
######################################################################
# 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.
# This router routes to remote hosts over SMTP using a DNS lookup with
# default options.
lookuphost:
driver = lookuphost
transport = remote_smtp
# This router routes to remote hosts over SMTP by explicit IP address,
# given as a "domain literal" in the form [nnn.nnn.nnn.nnn]. The RFCs
# require this facility, which is why it is enabled by default in Exim.
# If you want to lock it out, set forbid_domain_literals in the main
# configuration section above.
literal:
driver = ipliteral
transport = remote_smtp
######################################################################
# 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
# ------ ----- -------
* * F,2h,15m; G,16h,2h,1.5; F,4d,8h
######################################################################
# 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
# *@mappel.com.br ${lookup{$1}lsearch{/etc/email-addresses}\
# {$value}fail} bcfrF
# End of Exim configuration file
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