I have in /etc/postfix/main.cf:
smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
and SASL seems to be working:
$ testsaslauthd -u yang -p ... -f /var/spool/postfix/var/run/saslauthd/mux -s smtpd
0: OK "Success."
but I'm getting "Relay access denied" when connecting from outside the network (and e.g. localhost still works fine):
$ telnet blah.com 25
auth plain ...
235 2.7.0 Authentication successful
mail from:<yang@blah.com>
250 2.1.0 Ok
rcpt to:<yang@dest.com>
554 5.7.1 <yang@dest.com>: Relay access denied
Logs:
Oct 18 21:10:19 blah postfix/smtpd[13882]: connect from unknown[x.x.x.x]
Oct 18 21:10:19 blah postfix/smtpd[13882]: setting up TLS connection from unknown[x.x.x.x]
Oct 18 21:10:19 blah postfix/smtpd[13882]: Anonymous TLS connection established from unknown[x.x.x.x]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
Oct 18 21:10:19 blah postfix/smtpd[13882]: NOQUEUE: reject: RCPT from unknown[x.x.x.x]: 554 5.7.1 <yang@dest.com>: Relay access denied; from=<yang@blah.com> to=<yang@dest.com> proto=ESMTP helo=<[y.y.y.y]>
Oct 18 21:10:19 blah postfix/smtpd[13882]: disconnect from unknown [x.x.x.x]
Been stumped for some time now. Any hints?
My complete configuration follows; it's based on https://help.ubuntu.com/community/Postfix.
/etc/default/saslauthd:
START=yes
PWDIR="/var/spool/postfix/var/run/saslauthd"
PARAMS="-m ${PWDIR}"
PIDFILE="${PWDIR}/saslauthd.pid"
OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd"
/etc/postfix/main.cf:
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtp_tls_loglevel=1
smtp_tls_security_level=may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_tls_cert_file=/etc/ssl/certs/blah.crt
smtpd_tls_key_file=/etc/ssl/private/blah.key
smtpd_tls_loglevel=1
smtpd_tls_security_level=may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
myhostname = blah.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = localhost.blah.com, localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
# From <http://www.postfix.org/VIRTUAL_README.html>
virtual_mailbox_domains = blah.com invalid.invalid
virtual_mailbox_base = /var/mail/blah
virtual_mailbox_maps = hash:/etc/postfix/vmailbox
virtual_alias_maps = hash:/etc/postfix/valiases
virtual_minimum_uid = 100
virtual_uid_maps = static:1001
virtual_gid_maps = static:1001
sender_bcc_maps = hash:/etc/postfix/bccmaps
# DKIM
smtpd_milters = inet:localhost:8891
non_smtpd_milters = inet:localhost:8891
# Enforce SPF
smtpd_recipient_restrictions =
permit_mynetworks
reject_unauth_destination
check_policy_service unix:private/policyd-spf
policyd-spf_time_limit = 3600
/etc/postfix/sasl/smtpd.conf:
pwcheck_method: saslauthd
mech_list: plain login
