Mike Fedyk wrote:
On Tue, Nov 16, 2010 at 11:49 AM, Rob Kampen <rkampen@xxxxxxxxxxxxxxxxx> wrote:
Hi list,
I have noted over the last week or so my DNS servers are dumping lots of
messages for bogus domain lookups. Examining the postfix queue with
postqueue -p: I see many
(Host or domain name not found. Name service error for
name=bdgiedjhea.po6e4ina.com type=MX: Host not found, try again)
Jake@xxxxxxxxxxxxxxxxxxxxxxx
My question - why does this stay in the message queue - why not dumped back
with message undeliverable or dropped?
I understand this is probably related to my config - which follows:
<main.cf>
Here's what you want (copied from my config):
maps_rbl_reject_code = 450
non_fqdn_reject_code = 450
450 implies not available try again later - definitely not what I want
for blacklisted senders - I want 550 or something that makes their
server go up in smoke.
smtpd_delay_reject = yes
smtpd_helo_required = yes
smtpd_helo_restrictions =
reject_unauth_pipelining
permit_sasl_authenticated
permit_mynetworks
reject_invalid_hostname
reject_non_fqdn_hostname
reject_unknown_helo_hostname
permit
smtpd_sender_restrictions =
reject_unauth_pipelining
reject_non_fqdn_sender
reject_non_fqdn_recipient
reject_unknown_recipient_domain
reject_unknown_sender_domain
permit
smtpd_client_restrictions =
# sleep 1
reject_unauth_pipelining
permit_sasl_authenticated
permit_mynetworks
reject_unknown_client_hostname
permit
smtpd_recipient_restrictions =
reject_unauth_pipelining
reject_non_fqdn_recipient
reject_unknown_recipient_domain
permit_mynetworks
permit_sasl_authenticated
reject_unauth_destination
#fully automated RBLs
reject_rbl_client truncate.gbudb.net
reject_rbl_client dnsbl.proxybl.org
reject_rbl_client psbl.surriel.com
reject_rbl_client db.wpbl.info
reject_rbl_client bl.spamcop.net
# reject_rbl_client bl.spamcannibal.org #blocked charles
reject_rbl_client intercept.datapacket.net
reject_rbl_client spamtrap.drbl.drand.net
# reject_rbl_client dnsbl.ahbl.org #blocked godaddy
reject_rbl_client dnsbl-1.uceprotect.net
reject_rbl_client bhnc.njabl.org
reject_rbl_client dnsbl.njabl.org
#larder RBLs with some non-automation and larger ranges of IPs
# reject_rbl_client dnsbl.sorbs.net #(blocked fedora)
# reject_rbl_client dnsbl-2.uceprotect.net
reject_rbl_client dnsbl-3.uceprotect.net
reject_rbl_client zen.spamhaus.org
# reject_rbl_client
# reject_rbl_client dnsbl-2.uceprotect.net,
# check_policy_service unix:private/spfpolicy
# check_policy_service inet:127.0.0.1:10023
permit
strict_rfc821_envelopes = yes
smtpd_reject_unlisted_sender = yes
Thanks for sharing your config - when I get some spare time I'll check
it out.
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