my pre configured Postfix inluded these helo_access.pcre rejects;
today, I noticed an expected email was bounced by one of the
pre-configured rules as so:
Jan 31 10:08:01 emu postfix/smtpd[11075]: NOQUEUE: reject: RCPT from
unknown[59.167.231.218]: 554 5.7.1 <eth6619.nsw.adsl.internode.on.net>:
Helo command rejected: Go away, bad guy (adsl).; from=<hele...@tld.com.au>
to=<voy...@tld.net.au> proto=ESMTP
helo=<eth6619.nsw.adsl.internode.on.net>
host 59.167.231.218
218.231.167.59.in-addr.arpa domain name pointer ns3.cipaname.com.
before I contact the sender to tell them "you are misconfigured";
are these rules below:
'pretty good idea with little chance of false positives' ?
or 'not such a good reject idea with a lot of chance of fasle positives' ?
thanks
..from helo_access.pcre..
# Reject adsl spammers.
#
/adsl/ REJECT Go away, bad guy (adsl).
/dynamic/ REJECT Go away, bad guy (dynamic)
/\d{1,3}-\d{1,3}-\d{1,3}-\d{1,3}/ REJECT Go away (dynamic).
/pppoe/ REJECT Go away, bad guy (pppoe).
/dsl\.brasiltelecom\.net\.br/ REJECT Go away, bad guy (dsl.optinet.hr)
/dsl\.optinet\.hr/ REJECT Go away, bad guy (dsl.telesp.net.br)
/dsl\.telesp\.net\.br/ REJECT Go away, bad guy (dialog)
/dialup/ REJECT Go away, bad guy (dialup)
/dhcp/ REJECT Go away, bad guy (dhcp)
/dhcp\.stls\.mo\.charter\.com/ REJECT Go away, bad guy
(dhcp.stls.mo.charter.com)
/pool-/ REJECT Go away, bad guy (pool-)
/^cpe-/ REJECT Go away, bad guy (cpe-)
/\.cpe\./ REJECT Go away, bad guy (.cpe.)
