On Wed, Jul 29, 2009 at 2:35 PM, Carlos Williams<carlosw...@gmail.com> wrote:
> I am checking my mail queue and I have noticed that mail in my queue
> is stuck with the following error:
>
> AA83077925B     1508 Sun Jul 26 10:22:31  rheinl...@simulationinformation.com
> (host mx.dr1.us.army.mil[143.69.243.34] said: 451 #4.1.8 Domain of
> sender address <rheinl...@simulationinformation.com> does not resolve
> (in reply to MAIL FROM command))
>                                         james.to...@us.army.mil
>
> 4094D77921F     1520 Sun Jul 26 10:22:31  rheinl...@simulationinformation.com
> (host mx.dr1.us.army.mil[143.69.243.34] said: 451 #4.1.8 Domain of
> sender address <rheinl...@simulationinformation.com> does not resolve
> (in reply to MAIL FROM command))
>                                         br...@omitted_domain.com
>
> 2EF15779273     1503 Sun Jul 26 10:22:32  rheinl...@simulationinformation.com
> (host mx.ps1.us.army.mil[143.69.251.34] said: 451 #4.1.8 Domain of
> sender address <rheinl...@simulationinformation.com> does not resolve
> (in reply to MAIL FROM command))
>                                         tho...@omitted_domain.com
>
> 78BCE779279     1499 Sun Jul 26 10:22:31  rheinl...@simulationinformation.com
> (host mx.dr1.us.army.mil[143.69.243.34] said: 451 #4.1.8 Domain of
> sender address <rheinl...@simulationinformation.com> does not resolve
> (in reply to MAIL FROM command))
>                                         fr...@omitted_domain.com
>
> My domain is not the domain I omitted from the log entries and I
> checked /var/log/maillog to find the same error in my mail logs. I am
> concerned as to why my Postfix server is handling mail for the omitted
> domain. That domain is a .mil domain which has nothing to do with my
> Postfix server.
>
> ***Postconf -n***
>
> [r...@mail ~]# 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
> content_filter = amavisfeed:[127.0.0.1]:10024
> daemon_directory = /usr/libexec/postfix
> home_mailbox = mail/
> html_directory = no
> inet_interfaces = all
> mail_owner = postfix
> mailq_path = /usr/bin/mailq.postfix
> manpage_directory = /usr/share/man
> mydestination = $myhostname, $mydomain, mail.$mydomain
> mydomain = iamghost.com
> myhostname = mail.iamghost.com
> mynetworks = $config_directory/mynetworks
> myorigin = $mydomain
> newaliases_path = /usr/bin/newaliases.postfix
> queue_directory = /var/spool/postfix
> relay_domains =
> sendmail_path = /usr/sbin/sendmail.postfix
> setgid_group = postdrop
> smtpd_banner = $myhostname ESMTP
> smtpd_delay_reject = yes
> smtpd_helo_required = yes
> smtpd_helo_restrictions = permit_mynetworks,
> permit_sasl_authenticated,    reject_non_fqdn_helo_hostname,
> reject_invalid_helo_hostname,    permit
> smtpd_recipient_restrictions = permit_mynetworks,
> permit_sasl_authenticated,   reject_unauth_pipelining,
> reject_non_fqdn_recipient,   reject_unknown_recipient_domain,
> reject_unauth_destination,   reject_unlisted_recipient,
> check_policy_service unix:postgrey/socket,   check_sender_access
>  hash:/etc/postfix/sender_access,   reject_rbl_client
> zen.spamhaus.org,   reject_rbl_client bl.spamcop.net,   permit
> smtpd_sasl_auth_enable = yes
> smtpd_sasl_path = private/auth
> smtpd_sasl_security_options = noanonymous
> smtpd_sasl_type = dovecot
> smtpd_sender_restrictions = permit_mynetworks,
> permit_sasl_authenticated,    reject_non_fqdn_sender,
> reject_unknown_sender_domain,
> reject_unknown_reverse_client_hostname,     permit
> smtpd_tls_CAfile = /etc/ssl/intermediate.crt
> smtpd_tls_auth_only = yes
> smtpd_tls_cert_file = /etc/ssl/mail.crt
> smtpd_tls_key_file = /etc/ssl/mail.key
> smtpd_tls_loglevel = 1
> smtpd_tls_security_level = may
> smtpd_tls_session_cache_database = btree:/var/spool/postfix/smtpd_tls_cache
> smtpd_tls_session_cache_timeout = 3600s
> tls_random_source = dev:/dev/urandom
> unknown_local_recipient_reject_code = 550
>
> Can someone please help me understand why I am getting this several of
> the same entries showing up in my log entries? I don't think the
> sender is a spammer and this might be legitimate email but I can't
> understand why it's flowing through my SMTP server...
>
> - Carlos
>

Your configuration allows 'mynetworks' and sasl authenticated senders
to send mail from/to anywhere.
These are the likely sources of the messages in question.  Your
postfix logs will show you exactly where the message came from.

-Aaron

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