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SpamCop FAQ : SpamCop Blocking List information : How do I configure my mailserver to reject mail based on the blocklist? :
To turn on blanketed RLB checking with iPlanet Messaging 5.0+, modify the dispatcher.cnf file, adding a DNS_VERIFY_DOMAIN option.
Note there are other ways to do this with iPlanet Messaging, but this is the quickest and easiest. The disadvantage of this simpler approach is that it does the checks for all normal incoming SMTP messages including those from internal users. An alternative is to call out to dns_verify from a PORT_ACCESS mapping table or ORIG_MAIL_ACCESS mapping table. (See the iPlanet Messaging Reference Manual for additional details).
Here is an example of the iPlanet Messaging dispatcher.cnf file which is
located in If you wish the MTA to log such rejections, the 24th bit of the
Dispatcher debugging DEBUG option can be set (DEBUG=16%1000000) to
cause logging of the rejections to the dispatcher.log file. Log
entries take the following form:
access_control: host a.b.c.d found on DNS list and rejected
Unless otherwise specified, the default dispatcher.log* file would be
located in A sample of what is contained when a perp is identified looks like this:
Before the connection is closed with the perp, they see the following:
500 5.7.1 access_control: host 216.242.151.119 found on DNS list and
rejected
To make your changes to the dispatcher.cnf take effect, do an imsimta restart
with the following command:
Now check your dispatcher.log* file for rejected connections if you turned on
logging. That's it!
Another user has provided his setup file which uses various blocking lists, including MAPS RBL+. This can be viewed at Chad's personal mappings file
[SERVICE=SMTP]
PORT=25
! turn on RBL checking (uncomment the ones you want to check. Note there is
! a limit of 3 sources)
!
DNS_VERIFY_DOMAIN=inputs.orbz.org
DNS_VERIFY_DOMAIN=bl.spamcop.net
!DNS_VERIFY_DOMAIN=outputs.orbz.org
!DNS_VERIFY_DOMAIN=relays.ordb.org
!DNS_VERIFY_DOMAIN=orbs.dorkslayers.com
!DNS_VERIFY_DOMAIN=dev.null.dk
!DNS_VERIFY_DOMAIN=relays.osirusoft.com
!DNS_VERIFY_DOMAIN=relays.visi.com
!DNS_VERIFY_DOMAIN=rbl.maps.vix.com (same as ENABLE_RBL=1)
10:42:54.08 ( 4): access_control: host
(25.364) 154.235.170.64.inputs.orbz.org found on DNS list
(25.364) and rejected (500 5.7.1 Open relay input. See
(25.364) http://orbz.org/?64.170.235.154)
(25.364) 10:42:54.08 ( 4): app_listen(SMTP/25): conn REJECTED from
(25.364) 64.170.235.154, descr=19
(25.364) 10:43:24.37 ( 4): access_control: host
(25.365) 119.151.242.216.bl.spamcop.net found on DNS list
(25.365) and rejected (500 5.7.1 Blocked - see
(25.365) http://spamcop.net/bl.shtml?216.242.151.119)
(25.365) 10:43:24.37 ( 4): app_listen(SMTP/25): conn REJECTED from
(25.365) 216.242.151.119, descr=18
(25.365)
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