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Old 5th February 2013, 15:49
sudip sudip is offline
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Default postfix authentication

Hi,
I am administering a server and i must accept that I am a total newbie. I have followed the "The Perfect Server – CentOS 6.3 x86_64 (Apache2, Dovecot, ISPConfig 3)" to setup the server. Everything is ok in it, we do not have any problem in sending/receiving mail except that Postfix is allowing mails within the same domain without authentication.
example : my domain is xyz.com and I have two mail boxes. abc@xyz.com and bcd@xyz.com . Now in the mail client (Thunderbird) of abc@xyz.com , i have given smtp authentication method as "no authentication" and abc@xyz.com is trying to send a mail to bcd@xyx.com , still the mail is getting delivered. Can you please guide me or point me to the setting which might be causing it.

This is my output of postconf -n . In the result I have just modified myhostname and smtp_bind_address.

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
body_checks = regexp:/etc/postfix/body_checks
bounce_queue_lifetime = 1d
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = amavis:[127.0.0.1]:10024
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
default_process_limit = 50
header_checks = regexp:/etc/postfix/header_checks
html_directory = no
inet_interfaces = all
inet_protocols = ipv4
mail_owner = postfix
mailbox_size_limit = 0
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
maximal_queue_lifetime = 1d
message_size_limit = 0
milter_default_action = accept
milter_protocol = 2
mime_header_checks = regexp:/etc/postfix/mime_header_checks
mydestination = localhost, localhost.localdomain
myhostname = xyz.com
mynetworks = 127.0.0.0/8 [::1]/128
nested_header_checks = regexp:/etc/postfix/nested_header_checks
newaliases_path = /usr/bin/newaliases.postfix
non_smtpd_milters = $smtpd_milters
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps
queue_directory = /var/spool/postfix
queue_run_delay = 15m
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
receive_override_options = no_address_mappings
relay_domains = mysql:/etc/postfix/mysql-virtual_relaydomains.cf
relay_recipient_maps = mysql:/etc/postfix/mysql-virtual_relayrecipientmaps.cf
relayhost =
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_bind_address = x.x.x.x
smtpd_client_restrictions = check_client_access mysql:/etc/postfix/mysql-virtual_client.cf
smtpd_milters = inet:127.0.0.1:8891
smtpd_recipient_restrictions = reject_unauth_pipelining,permit_mynetworks,permit_ sasl_authenticated, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf, reject_unauth_destination
smtpd_reject_unlisted_sender = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf
smtpd_tls_CAfile = /usr/local/ispconfig/interface/ssl1/startssl.chain.class1.server.crt
smtpd_tls_cert_file = /etc/postfix/smtpd.cert
smtpd_tls_key_file = /etc/postfix/smtpd.key
smtpd_tls_security_level = may
smtpd_use_tls = yes
transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
unknown_local_recipient_reject_code = 550
virtual_alias_domains =
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_gid_maps = static:5000
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_transport = dovecot
virtual_uid_maps = static:5000


Thanks in advance
Sudip
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