A friend of mine would like to send me e-mail, but his ISP has listed ALL
their addresses on the DUL. It seems they don't like their clients running
their own SMTP server. :-)

So, one approach, aside from getting his IP off the DUL, would be for me
to accept his IP before checking the RBL/RSS/DUL maps. Would the following
work?

smtpd_sender_restrictions =
        reject_unknown_sender_domain,
        check_sender_access hash:/opt/postfix/etc/restrict/sender,
        reject_maps_rbl

sender:
*zappa.dyndns.org ACCEPT

My version of postfix is 19991231-pl08. My configuration (grep'ing for
rbl) is:

smtpd_etrn_restrictions = reject_maps_rbl
smtpd_client_restrictions = reject_maps_rbl
smtpd_helo_restrictions = permit_mynetworks, reject_maps_rbl
smtpd_sender_restrictions = reject_unknown_sender_domain, reject_maps_rbl
maps_rbl_domains =
    blackholes.mail-abuse.org
    dialups.mail-abuse.org
    relays.mail-abuse.org
maps_rbl_reject_code = 554

Thanks,
js.

-- 
Jean-Sebastien Morisset, Sr. UNIX Admin <jsmorissmvlan.net>
Personal Homepage <http://jsmoriss.mvlan.net/>; UNIX, Internet, 
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