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I've a dedicated server with postfix MTA & one Virtual machines running on server. But I am having issue with sending emails from websites configured on virtual machine. It gives me below error when I am trying to send email.

Jan 28 07:38:17 app postfix/smtpd[10806]: connect from unknown[10.28.169.130]
Jan 28 07:38:17 app postfix/smtpd[10806]: lost connection after EHLO from unknown[10.28.169.130]
Jan 28 07:38:17 app postfix/smtpd[10806]: disconnect from unknown[10.28.169.130]

where 10.28.169.130 is private interface of dedicated system. I can send mails from other servers using this MTA only having issue with VM instance.

Postfix configuration is as below.

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
disable_vrfy_command = yes
html_directory = no
inet_interfaces = xx.xx.xx.xx
inet_protocols = ipv4
local_transport = xxx.xxxx.xxx
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
message_size_limit = 0
milter_default_action = accept
milter_protocol = 6
multi_instance_directories = 
multi_instance_enable = yes
multi_instance_wrapper = ${command_directory}/postmulti -p --
mydestination = xxx.xxxx.xxx
myhostname = xxx.xxxx.xxx
mynetworks = 127.0.0.0/8, $myhostname
myorigin = xxx.xxxx.xxx
newaliases_path = /usr/bin/newaliases.postfix

#DKIM Config
non_smtpd_milters = inet:localhost:8891
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix

setgid_group = postdrop
smtp_helo_name = xxx.xxxxx.xxx
smtpd_banner = xxxx Email System
smtpd_recipient_restrictions = permit_mynetworks,  permit_sasl_authenticated, reject_unauth_destination, permit
smtpd_sasl_auth_enable = yes
smtpd_sasl_exceptions_networks = $mynetworks
smtpd_sasl_path = private/auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_restrictions = permit_mynetworks,  permit_sasl_authenticated, reject_unauth_destination, permit
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/ssl/mailserver/server.pem
smtpd_tls_key_file = /etc/ssl/mailserver/server.key
smtpd_tls_loglevel = 0
smtpd_tls_received_header = no
smtpd_tls_session_cache_database = btree:/var/lib/postfix/smtpd_tls_session_cache
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
unknown_local_recipient_reject_code = 550
virtual_alias_maps = proxy:mysql:$config_directory/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:12
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:mysql:$config_directory/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = proxy:mysql:$config_directory/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 505
virtual_transport = dovecot
virtual_uid_maps = static:505

Please help me to resolve this issue. Thanks

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1 Answer 1

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You can do one of two things, first, add 10.28.169.130/32 to your mynetworks declaration, or relax your restrictions for sending.. at the moment you can only send if you're in mynetworks, or provide sasl authentication.

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  • thanks for your response, I've added this IP to mynetworks but still I am getting same error.
    – Vaibhav Panmand
    Jan 29, 2014 at 4:46
  • Add this debug_peer_list = 10.28.169.130 to your main.cf, then reload postfix.. also have a look at the maillog on 10.28.169.130.
    – NickW
    Jan 29, 2014 at 9:15
  • It's resolved now, actually I was trying to send emails from OSQA website with authentication. But there is issue in OSQA for SMTP auth. So as per your answer I've added ip in mynetworks & sending mails without authentication now. BW Thanks for your help
    – Vaibhav Panmand
    Jan 29, 2014 at 9:20
  • Ah, I should have asked if your were sending with smtp_auth, the mynetworks setting is a nice shortcut though :)
    – NickW
    Jan 29, 2014 at 9:32

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