On Jan 30, 2014, at 10:21 PM, Noel Jones <njo...@megan.vbhcs.org> wrote:
> On 1/30/2014 7:17 PM, li...@sbt.net.au wrote: >> 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"; > > There are some legit static IP servers with a hostname containing > /adsl/, so you'll need to watch out for false positives. How much of > a problem that is will be site specific. I’ll echo what Noel said. And based on your subject, you may have the idea that having (A)DSL service and having a dynamic TCP/IP address are equivalent. They are not! There are a lot of legitimate small business and SOHO servers on static DSL connections (like mine). In many cases, the DSL provider will change the reverse DNS but not always. It’s the dynamic address hostnames you want to block. -- Larry Stone lston...@stonejongleux.com http://www.stonejongleux.com/
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