2. If the name doesn't end in a dot then append each item in the search list to the name.
This is only done if dnsrch is true.
triggered by..
From: Charlie Brady <charlieb-qpsmtpd@budge.apana.org.au>
Subject: [BUG] Default search path used in require_resolvable_fromhost
Date: Sat, 17 Jul 2010 16:24:42 -0400 (EDT)
Message-ID:
<Pine.LNX.4.64.1007171623040.17109@e-smith.charlieb.ott.istop.com>
http://bugs.contribs.org/show_bug.cgi?id=5808
Jesper Knudsen 2010-03-01 01:29:10 MST
When using the require_resolvable_fromhost plugin for qpsmtpd I noticed
that mails from user@localhost.localdomain was actually getting through
this filter. I finally found out that the plugin has a bug that causes it
to insert default search path if it cannot find the domain. This means in
my case that localhost.localdomain was then tried resolved as
localhost.localdomain.swerts-knudsen.dk and since I have a wilcard CNAME
was resolved as my public IP.
Since this plugin is only enabled for public interface the fix is to set
the "dnsrch" flag when creating the Net::DNS object.
In require_resolvable_fromhost:
my $res = Net::DNS::Resolver->new (
dnsrch => 0
);
803a320127