On 7/6/2011 2:32 AM, Henrik K wrote: > On Wed, Jul 06, 2011 at 12:38:05AM -0500, Noel Jones wrote: >> On 7/6/2011 12:07 AM, Simon Deziel wrote: >>> Hi all, >>> >>> Since I started using Stan's fqrdns.pcre file to reduce spam I have some >>> problems receiving emails from with IPv6 clients. >>> >>> Jul 4 05:19:10 mx postfix/smtpd[10191]: NOQUEUE: reject: RCPT from >>> mail.python.org[2001:888:2000:d::a6]: 554 >>> <mail.python.org[2001:888:2000:d::a6]>: Client host rejected: Generic - >>> Please relay via ISP; fr >>> om=<john....@python.org> to=<jane....@example.com> proto=ESMTP >>> helo=<mail.python.org> >>> >>> Manual testing with dig showed that mail.python.org had a PTR matching >>> its AAAA. A few postmap lookups using IPv6 gave results I don't understand : >>> >>> # postmap -q "2001:888:2000:d::a6" pcre:/etc/postfix/fqrdns.pcre >>> REJECT Generic - Please relay via ISP >>> #postmap -q "2001:888:2000:d::aa" pcre:/etc/postfix/fqrdns.pcre >>> >>> What's odd is that only 12 rules reject without mentioning the specific >>> ISP name/relay name and none of them should match an IPv6. >>> >>> I am probably missing something here and would greatly appreciate any >>> help on this. >> >> This line is the culprit. >> /[a-z-][0-9]+$/ REJECT Generic - >> Please relay via ISP >> >> the ...a6" of your test string matches "a letter followed by a >> number at the end". >> >> easy fix is to remove the offending line. I'm too >> sleep-deprived to come up with anything more clever right now. > > Simply insert as first rule: > > /:/ DUNNO >
While that will hide the problem, it would be much better to check for a valid v6 construct, or a least check for invalid characters in that context. -- Noel Jones
