From: Andrew Long (fursinkgmail.com)
Date: Fri Mar 14 2008 - 15:57:26 CDT

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Am I close with this?:

mydestination = ourdomain.com
relay_domains = ourdomain.com
relay_recipient_maps = hash:/etc/postfix/relay_recipients
relay_transport = smtp

++ relay_recipients ++
joeourdomain.com OK
edourdomain.com OK
maryourdomain.com OK

Andrew

On Fri, Mar 14, 2008 at 1:46 PM, Andrew Long <fursinkgmail.com> wrote:
> This MTA is currently set up not to accept any mail from the outside.
> It has no MX in DNS (but does have a PTR). It is set up to relay for
> certain ip blocks. Now, I need to accept mail for our own domain only,
> but selectively pass all that mail out to a third party MTX who
> handles our corporate mail. The problem is that some MTX's won't talk
> to us without an MX, but if I put one in, some of our corporate mail
> gets sent there (from MTX's that ignore the priority or if the pri or
> sec servers timeout for some reason). I want to add the MX, but ensure
> that mail accepted for "ourdomain.com" gets passed back out to our pri
> or sec mail handlers. I understand there is some danger of creating a
> loop there, but it is seldom the case the pri and sec timeout...
>
> Can someone point me in the right direction here?
>
> +++
> alias_maps = hash:/etc/aliases
> command_directory = /usr/sbin
> config_directory = /etc/postfix
> daemon_directory = /usr/libexec/postfix
> debug_peer_level = 2
> default_process_limit = 10
> disable_vrfy_command = yes
> html_directory = no
> local_recipient_maps =
> mailq_path = /usr/bin/mailq.postfix
> manpage_directory = /usr/share/man
> mynetworks = 127.0.0.0/8, /etc/postfix/relay-ip
> newaliases_path = /usr/bin/newaliases.postfix
> readme_directory = /usr/share/doc/postfix-2.2.10/README_FILES
> relay_domains =
> sample_directory = /usr/share/doc/postfix-2.2.10/samples
> sendmail_path = /usr/sbin/sendmail.postfix
> setgid_group = postdrop
> smtp_connect_timeout = 5
> smtp_helo_timeout = 15s
> smtpd_banner = $myhostname ESMTP $mail_name
> smtpd_client_connection_count_limit = 20
> smtpd_client_connection_rate_limit = 40
> smtpd_client_event_limit_exceptions = 127.0.0.0/8
> smtpd_client_message_rate_limit = 40
> smtpd_client_recipient_rate_limit = 40
> smtpd_client_restrictions = permit_mynetworks
> smtpd_data_restrictions = reject_unauth_pipelining, permit
> smtpd_helo_required = yes
> smtpd_recipient_restrictions = reject_unknown_sender_domain,
> reject_non_fqdn_recipient, reject_unknown_recipient_domain,
> permit_mynetworks, check_recipient_access
> hash:/etc/postfix/roleaccount, reject_unauth_destination,
> check_helo_access hash:/etc/postfix/helo_checks, reject_rbl_client
> bl.spamcop.net,
> smtpd_reject_unlisted_sender = yes
> smtpd_sender_restrictions = reject_unknown_sender_domain,
> reject_non_fqdn_sender
> unknown_local_recipient_reject_code = 550
>
> +++
>
> Thank You.
>
> Andrew
>

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