Hello Admin,
I have configured an SMTP server for sending emails to our customers.
For this, I have used Postfix MTA with Cyrus.
All things working fine except one thing, the sending speed is too slow. It is sending around 1 mail per 5 seconds (approx).
I have spent 4-5 days already for finding the issue, but not found any solution.
This is My respolv.conf
nano /etc/resolv.conf
; Created by cloud-init on instance boot automatically, do not edit.
;
;nameserver 67.207.67.3
;nameserver 67.207.67.2
nameserver 8.8.8.8
search com
This is my main.cf
[root@mydomain ~]# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
default_process_limit = 10
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
milter_default_action = accept
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mydomain = $myhostname
myhostname = mydomain.com
mynetworks = 127.0.0.1/32
myorigin = $myhostname
newaliases_path = /usr/bin/newaliases.postfix
non_smtpd_milters = $smtpd_milters
polite_destination_concurrency_limit = 3
polite_destination_rate_delay = 0
polite_destination_recipient_limit = 5
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
recipient_delimiter = +
relayhost =
sample_directory = /usr/share/doc/postfix-2.10.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_destination_concurrency_limit = 4
smtp_destination_rate_delay = 1s
smtp_extra_recipient_limit = 2
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_client_restrictions = sleep 5
smtpd_delay_reject = no
smtpd_error_sleep_time = 30
smtpd_hard_error_limit = 20
smtpd_milters = inet:127.0.0.1:8891
smtpd_recipient_limit = 1000
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_rbl_client opm.blitzed.org, reject_rbl_client list.dsbl.org, reject_rbl_client sbl.spamhaus.org, reject_rbl_client cbl.abuseat.org, reject_rbl_client dul.dnsbl.sorbs.net
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = no
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_path = /etc/sasl2/smtpd.conf
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = cyrus
smtpd_sender_restrictions = reject_unknown_sender_domain
smtpd_soft_error_limit = 10
smtpd_tls_CAfile = /etc/ssl/certs/ca-bundle.crt
smtpd_tls_cert_file = /etc/postfix/ssl/mydomain_com.crt
smtpd_tls_key_file = /etc/postfix/ssl/mydomain.key
smtpd_tls_loglevel = 0
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:/var/lib/postfix/smtpd_scache
smtpd_tls_session_cache_timeout = 10800s
smtpd_use_tls = yes
transport_maps = hash:/etc/postfix/transport
turtle_destination_concurrency_limit = 2
turtle_destination_rate_delay = 1s
turtle_destination_recipient_limit = 2
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual_users
My Maillog File:
Apr 25 12:05:07 mydomain postfix/cleanup[8062]: 79257C18584: message-id=<93d8f3b8e4191815f06ceed174bec8f8@nl.myclientdomain.com>
Apr 25 12:05:07 mydomain opendkim[940]: 79257C18584: DKIM-Signature field added (s=default, d=mydomain.com)
Apr 25 12:05:07 mydomain postfix/qmgr[7660]: 79257C18584: from=<news@mydomain.com>, size=4190, nrcpt=1 (queue active)
Apr 25 12:05:07 mydomain postfix/smtpd[7910]: disconnect from myclientdomain.com[167.99.154.159]
Apr 25 12:05:07 mydomain postfix/smtpd[7914]: connect from myclientdomain.com[167.99.154.159]
Apr 25 12:05:08 mydomain postfix/smtp[8053]: 79257C18584: to=<abc@gmail.com>, relay=gmail-smtp-in.l.google.com[209.85.201.26]:25, delay=0.76, delays=0.09/0/0.27/0.41, dsn=2.0.0, status=sent (250 2.0.0 OK 1524657908 y58-v6si2415264qtb.234 - gsmtp)
Apr 25 12:05:08 mydomain postfix/qmgr[7660]: 79257C18584: removed
Apr 25 12:05:12 mydomain postfix/smtpd[7914]: 95A20C18584: client=myclientdomain.com[167.99.154.159], sasl_method=CRAM-MD5, sasl_username=jitesh@mydomain.com
Apr 25 12:05:12 mydomain postfix/cleanup[8062]: 95A20C18584: message-id=<82022621ebd12ef802c965414fd8cef0@nl.myclientdomain.com>
Apr 25 12:05:12 mydomain opendkim[940]: 95A20C18584: DKIM-Signature field added (s=default, d=mydomain.com)
Apr 25 12:05:12 mydomain postfix/qmgr[7660]: 95A20C18584: from=<news@mydomain.com>, size=4187, nrcpt=1 (queue active)
Apr 25 12:05:12 mydomain postfix/smtpd[7914]: disconnect from myclientdomain.com[167.99.154.159]
Apr 25 12:05:12 mydomain postfix/smtpd[7956]: connect from myclientdomain.com[167.99.154.159]
Apr 25 12:05:13 mydomain postfix/smtp[8053]: 95A20C18584: to=<abcd@gmail.com>, relay=gmail-smtp-in.l.google.com[209.85.201.26]:25, delay=0.82, delays=0.09/0/0.28/0.45, dsn=2.0.0, status=sent (250 2.0.0 OK 1524657913 32si4669301qvb.261 - gsmtp)
Apr 25 12:05:13 mydomain postfix/qmgr[7660]: 95A20C18584: removed
Apr 25 12:05:17 mydomain postfix/smtpd[7956]: B54CBC18584: client=myclientdomain.com[167.99.154.159], sasl_method=CRAM-MD5, sasl_username=jitesh@mydomain.com
Apr 25 12:05:17 mydomain postfix/cleanup[8062]: B54CBC18584: message-id=<2cce882185d872d31979b9058bd13997@nl.myclientdomain.com>
Apr 25 12:05:17 mydomain opendkim[940]: B54CBC18584: DKIM-Signature field added (s=default, d=mydomain.com)
Apr 25 12:05:17 mydomain postfix/qmgr[7660]: B54CBC18584: from=<news@mydomain.com>, size=4179, nrcpt=1 (queue active)
Apr 25 12:05:17 mydomain postfix/smtpd[7956]: disconnect from myclientdomain.com[167.99.154.159]
Apr 25 12:05:17 mydomain postfix/smtpd[7910]: connect from myclientdomain.com[167.99.154.159]
Apr 25 12:05:18 mydomain postfix/smtp[8053]: B54CBC18584: to=<abcde@gmail.com>, relay=gmail-smtp-in.l.google.com[209.85.201.26]:25, delay=0.76, delays=0.09/0/0.27/0.4, dsn=2.0.0, status=sent (250 2.0.0 OK 1524657918 j12-v6si2946429qtf.334 - gsmtp)
Apr 25 12:05:18 mydomain postfix/qmgr[7660]: B54CBC18584: removed
Apr 25 12:05:22 mydomain postfix/smtpd[7910]: D63D6C18584: client=myclientdomain.com[167.99.154.159], sasl_method=CRAM-MD5, sasl_username=jitesh@mydomain.com
Thanks In Advance
Jitesh
