Медленая отправка писем через sendmail

Скорее всего проблемы в DNS

Или это не сервер а vps?

Это просто другой MTA, также как exim, qmail и множество других. Если сравнивать postfix и sendmail, то первый более простой в конфигурировании, более безопасный, жрет меньше ресурсов. У второго огромная история, возможность работать на высоко нагруженных почтовых шлюзах и большая гибкость помощью макросов и m4. Что касается скорости такого понятия у MTA нет, все зависит от настроек, размера почтовой очереди, качества подключения, скорости резолва от DNS сервера. В любом случае если есть проблемы с отправкой нужно смотреть настройки.

А где лежит конфиг от него?

Сервер

Зависит от установленной системы и способа установки. Могу только посоветовать запустить поиск в ssh:

find /etc/ -name sendmail.cf
или
find /usr/ -name sendmail.cf

В некоторых дистрибутивах конфиг называется sendmail.conf, еще можно поискать по макроконфигу sendmail.mc, без него не сгенерировать sendmail.cf

Если сервер свой, то тогда только DNS.

А какие могут быть проблемы в ДНС ?

Могут быть проблемы с преобразованием доменов в ip-адреса.

По этой причине могут быть "тормоза" при отправке почты.

И как эту проблему исправить?

maxttor добавил 23.02.2009 в 20:31

Конфиг sendmail'а:

###########################################################################
# $Id: sendmail.conf,v 1.14 2005/11/30 23:58:59 bjorn Exp $
###########################################################################

# You can put comments anywhere you want to.  They are effective for the
# rest of the line.

# this is in the format of <name> = <value>.  Whitespace at the beginning
# and end of the lines is removed.  Whitespace before and after the = sign
# is removed.  Everything is case *insensitive*.

# Yes = True  = On  = 1
# No  = False = Off = 0

Title = "sendmail"

# Which logfile group...
LogFile = maillog

# Only give lines pertaining to the sendmail service...
*MultiService = sendmail,sm-mta
*RemoveHeaders

# Previous versions of sendmail.conf allowed for the use of the
# $Sendmail_Detail variable.  Because now all services have use
# of the Detail variable, $Sendmail_Detail is deprecated, and may
# be removed in a future version of the sendmail filter script.
# How Detail affects the output of sendmail is described here:
#
# The Detail is used to override the general logwatch Detail
# parameter that is set either when invoking logwatch (option --detail)
# or specified in the conf/logwatch.conf file, in the variable Detail.
# If not specified, the default is to inherit the value of the general
# logwatch Detail setting.
#
# Example:
#Detail = 5
#
# The defined values of Detail are as follows:
# Detail >= 0: Will print:";
#                         - severe errors and basic statistics";
# Detail >= 3: Print above plus:";
#                         - counts of errors handled by sendmail";
# Detail >= 5: Print above plus:";
#                         - details of errors handled by sendmail";
# Detail >= 10: Print above plus:";
#                         - all statistics gathered";

# Note that Detail is independent of sendmail's LogLevel.
# The logwatch script should be able to handle any logging level
# set in sendmail (either through confLOG_LEVEL in the *.mc files
# or through LogLevel in the *.cf files).  The default setting is
# usually a LogLevel of 9.  At level 15, for example, SMTP
# transactions are logged, and the logwatch script extracts additional
# information.  Levels above 15 generate additional debug information,
# which is filtered by the logwatch script.  Therefore, setting higher
# levels of LogLevel will yield larger mail log files, may provide
# additional parsed information in the logwatch log, but should not
# cause new unmatched entries.

# All sendmail log statements that start with "DEBUG: " will be filtered.
# This may be used for user-defined statements that should appear on the log,
# but not reported by logwatch.

# $Sendmail_PrettyHost is used to format host entries in a tabular
# format.  It is mostly useful when you have a very large number of
# entries for errors that display host names/addresses.  If not
# specified, the default is 0, which indicates that no additional
# host formatting is done.  Set to 1 to enable the host formatting.
#$Sendmail_PrettyHost = 0


# The following are examples of the use of variables SendmailMatchFilter,
# Sendmail_ReportFilter, and $Sendmail_MilterHeadersToCount.
# To uncomment and use these specific examples, remember to remove the '#'
# from the first column. And of course, you can write your own filters.
# Note that unlike the statements in the sendmail script, you must end
# each line (except the last one) with a \ to denote a continuation line

#$Sendmail_MatchFilter = "                                                   \
#   # filter and count how many times the alias database is rebuilt          \
#   if ( ($User) = ($ThisLine =~ /^alias database .* rebuilt by (.*)/ ) ) {  \
#      $DatabaseBuild{$User}++;                                              \
#      # note that we don't need to re-assign an empty string to $ThisLine   \
#      #   because the 'alias database' line is then ignored by the          \
#      #   scripts/services/sendmail script.                                 \
#   }                                                                        \
#                                                                            \
#   # here we'll choose to ignore and not report the 'lost input channel'    \
#   #   statements                                                           \
#   if ( $ThisLine =~ /^lost input channel from/ ) {                         \
#      # we re-assign an empty string to $ThisLine to prevent further        \
#      #   processing of this log line by the sendmail script.               \
#      $ThisLine = "";                                                       \
#   }"

#$Sendmail_ReportFilter =   "                                                \
#   if (keys %DatabaseBuild) {                                               \
#      print "\n\nDatabase re-built by:";                                    \
#      foreach $User (keys %DatabaseBuild) {                                 \
#         print "\n    $User: $DatabaseBuild{$User} Time(s)";                \
#      }                                                                     \
#   }"

# The $Sendmail_MilterHeadersToCount will count every header added with
#   one (or more) of the specified strings.  Each string is specified by
#   delimiting it with a vertical bar, and is counted separately:
$Sendmail_MilterHeadersToCount = "X-SPF|X-Spam|X-Scanned-By: MIMEDefang|Received-SPF: fail|Received-SPF: softfail"


#########################################################
# Sendmail Threshold values. 
# These allow you to configure the output and restrict verbose reports
# by limiting what is printed to occurances >= the value you enter.
#
# Note that case is insensitive.

#Sendmail Config Values
$sendmail_mailbomblistthreshold = 25
$sendmail_mailbombthreshold = 10
$sendmail_unresolveddomainsthreshold = 1
$sendmail_knownspammerthreshold = 1
$sendmail_relaydeniedthreshold = 1
$sendmail_checkmailrejectthreshold = 1
$sendmail_checkrcptrejectthreshold = 1
$sendmail_lostinputchannelthreshold = 1
$sendmail_dummyconnectionthreshold = 1
$sendmail_unknownhoststhreshold = 1
$sendmail_unknownusersthreshold = 1
$sendmail_domainerrorsthreshold = 1
$sendmail_pregreetingthreshold = 1
$sendmail_collecterrorthreshold = 1
$sendmail_timeoutthreshold = 1
$sendmail_blackholethreshold = 1

#Set this to Null to suppress the Top 10 Email Addresses
$sendmail_tolistthreshold = 10

########################################################
# Please send all comments, suggestions, bug reports,
#    etc, to logwatch-devel@logwatch.org
########################################################

# vi: shiftwidth=3 tabstop=3 et

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

# $Id: sendmail.conf,v 1.14 2005/11/30 23:58:59 bjorn Exp $

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



# You can put comments anywhere you want to.  They are effective for the

# rest of the line.



# this is in the format of <name> = <value>.  Whitespace at the beginning

# and end of the lines is removed.  Whitespace before and after the = sign

# is removed.  Everything is case *insensitive*.



# Yes = True  = On  = 1

# No  = False = Off = 0



Title = "sendmail"



# Which logfile group...

LogFile = maillog



# Only give lines pertaining to the sendmail service...

*MultiService = sendmail,sm-mta

*RemoveHeaders



# Previous versions of sendmail.conf allowed for the use of the

# $Sendmail_Detail variable.  Because now all services have use

# of the Detail variable, $Sendmail_Detail is deprecated, and may

# be removed in a future version of the sendmail filter script.

# How Detail affects the output of sendmail is described here:

#

# The Detail is used to override the general logwatch Detail

# parameter that is set either when invoking logwatch (option --detail)

# or specified in the conf/logwatch.conf file, in the variable Detail.

# If not specified, the default is to inherit the value of the general

# logwatch Detail setting.

#

# Example:

#Detail = 5

#

# The defined values of Detail are as follows:

# Detail >= 0: Will print:";

#                         - severe errors and basic statistics";

# Detail >= 3: Print above plus:";

#                         - counts of errors handled by sendmail";

# Detail >= 5: Print above plus:";

#                         - details of errors handled by sendmail";

# Detail >= 10: Print above plus:";

#                         - all statistics gathered";



# Note that Detail is independent of sendmail's LogLevel.

# The logwatch script should be able to handle any logging level

# set in sendmail (either through confLOG_LEVEL in the *.mc files

# or through LogLevel in the *.cf files).  The default setting is

# usually a LogLevel of 9.  At level 15, for example, SMTP

# transactions are logged, and the logwatch script extracts additional

# information.  Levels above 15 generate additional debug information,

# which is filtered by the logwatch script.  Therefore, setting higher

# levels of LogLevel will yield larger mail log files, may provide

# additional parsed information in the logwatch log, but should not

# cause new unmatched entries.



# All sendmail log statements that start with "DEBUG: " will be filtered.

# This may be used for user-defined statements that should appear on the log,

# but not reported by logwatch.



# $Sendmail_PrettyHost is used to format host entries in a tabular

# format.  It is mostly useful when you have a very large number of

# entries for errors that display host names/addresses.  If not

# specified, the default is 0, which indicates that no additional

# host formatting is done.  Set to 1 to enable the host formatting.

#$Sendmail_PrettyHost = 0





# The following are examples of the use of variables SendmailMatchFilter,

# Sendmail_ReportFilter, and $Sendmail_MilterHeadersToCount.

# To uncomment and use these specific examples, remember to remove the '#'

# from the first column. And of course, you can write your own filters.

# Note that unlike the statements in the sendmail script, you must end

# each line (except the last one) with a \ to denote a continuation line



#$Sendmail_MatchFilter = "                                                   \

#   # filter and count how many times the alias database is rebuilt          \

#   if ( ($User) = ($ThisLine =~ /^alias database .* rebuilt by (.*)/ ) ) {  \

#      $DatabaseBuild{$User}++;                                              \

#      # note that we don't need to re-assign an empty string to $ThisLine   \

#      #   because the 'alias database' line is then ignored by the          \

#      #   scripts/services/sendmail script.                                 \

#   }                                                                        \

#                                                                            \

#   # here we'll choose to ignore and not report the 'lost input channel'    \

#   #   statements                                                           \

#   if ( $ThisLine =~ /^lost input channel from/ ) {                         \

#      # we re-assign an empty string to $ThisLine to prevent further        \

#      #   processing of this log line by the sendmail script.               \

#      $ThisLine = "";                                                       \

#   }"



#$Sendmail_ReportFilter =   "                                                \

#   if (keys %DatabaseBuild) {                                               \

#      print "\n\nDatabase re-built by:";                                    \

#      foreach $User (keys %DatabaseBuild) {                                 \

#         print "\n    $User: $DatabaseBuild{$User} Time(s)";                \

#      }                                                                     \

#   }"



# The $Sendmail_MilterHeadersToCount will count every header added with

#   one (or more) of the specified strings.  Each string is specified by

#   delimiting it with a vertical bar, and is counted separately:

$Sendmail_MilterHeadersToCount = "X-SPF|X-Spam|X-Scanned-By: MIMEDefang|Received-SPF: fail|Received-SPF: softfail"





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

# Sendmail Threshold values. 

# These allow you to configure the output and restrict verbose reports

# by limiting what is printed to occurances >= the value you enter.

#

# Note that case is insensitive.



#Sendmail Config Values

$sendmail_mailbomblistthreshold = 25

$sendmail_mailbombthreshold = 10

$sendmail_unresolveddomainsthreshold = 1

$sendmail_knownspammerthreshold = 1

$sendmail_relaydeniedthreshold = 1

$sendmail_checkmailrejectthreshold = 1

$sendmail_checkrcptrejectthreshold = 1

$sendmail_lostinputchannelthreshold = 1

$sendmail_dummyconnectionthreshold = 1

$sendmail_unknownhoststhreshold = 1

$sendmail_unknownusersthreshold = 1

$sendmail_domainerrorsthreshold = 1

$sendmail_pregreetingthreshold = 1

$sendmail_collecterrorthreshold = 1

$sendmail_timeoutthreshold = 1

$sendmail_blackholethreshold = 1



#Set this to Null to suppress the Top 10 Email Addresses

$sendmail_tolistthreshold = 10



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

# Please send all comments, suggestions, bug reports,

#    etc, to logwatch-devel@logwatch.org

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



# vi: shiftwidth=3 tabstop=3 et

Конфиг sendmail не причём. Проблему нужно смотреть на самом сервере.

какая у Вас ОС?

что выводит #dig yourhostname?

проверьте время резолва доменов через nslookup