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postfix-users: Re: Relay Access Denied using SASL

Re: Relay Access Denied using SASL

From: Yang Zhang <yanghatespam_at_nospam>
Date: Tue Oct 19 2010 - 05:42:45 GMT
To: Postfix users <postfix-users@postfix.org>

*Facepalm*

smtpd_recipient_restrictions is specified a second time.

A depressing amount of time was spent debugging this.

On Mon, Oct 18, 2010 at 10:30 PM, Yang Zhang <yanghatespam@gmail.com> wrote:
> Omitted one important detail: this failure is seen when attempting to
> send from clients outside the network. Sending from mynetworks (e.g.
> localhost) works fine.
>
> On Mon, Oct 18, 2010 at 10:29 PM, Yang Zhang <yanghatespam@gmail.com> wrote:
>> 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":
>>
>> $ 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
>>
>> --
>> Yang Zhang
>> http://yz.mit.edu/
>>
>
>
>
> --
> Yang Zhang
> http://yz.mit.edu/
>

-- Yang Zhang http://yz.mit.edu/