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Date:      Wed, 28 Aug 2002 22:18:55 +0200 (CEST)
From:      Richard <richard@unixguru.nl>
To:        freebsd-stable@FreeBSD.ORG
Subject:   Sendmail dnsbl does IPv6 lookup
Message-ID:  <20020828220628.C57868-100000@mail.unixguru.nl>
In-Reply-To: <002601c24ece$0bb9a320$6501a8c0@bob>

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Hello,

Don't know if this is a Sendmail or a FreeBSD problem, but lets try over
here first.

In my $hostname.mc I have the following:

define(`confBIND_OPTS', `WorkAroundBrokenAAAA')dnl
FEATURE(delay_checks)dnl
FEATURE(`enhdnsbl', `bl.spamcop.net', `"Spam blocked see: http://spamcop.net/bl.shtml?"$&{client_addr}', `t')dnl
FEATURE(`dnsbl', `blackholes.wirehub.net', `"550 5.7.1 ACCESS DENIED to <"$&f"> thru "$&{client_name}" (http://doema.wirehub.nl/error/errors.html)"', `')dnl
FEATURE(`enhdnsbl', `dynablock.wirehub.net', `"550 5.7.1 ACCESS DENIED to <"$&f"> thru "$&{client_name}" (http://doema.wirehub.nl/error/errors.html)"', `t', `127.0.0.2.')dnl

When an email arrives at my mail server there are 3 DNS connections made,
to lookup the address that started the SMTP session.

28-Aug-2002 22:03:20.036 XX+/127.0.0.1/xxx.xxx.xxx.xxx.bl.spamcop.net/A/IN
28-Aug-2002 22:03:20.208 XX+/127.0.0.1/xxx.xxx.xxx.xxx.blackholes.wirehub.net/AAAA/IN
28-Aug-2002 22:03:20.210 XX+/127.0.0.1/xxx.xxx.xxx.xxx.dynablock.wirehub.net/A/IN

As you can see the lookup made for xxx.xxx.xxx.xxx.blackholes.wirehub.net
is aan IPv6 lookup and that should be an IPv4 lookup. Is this a bug,
or did I something wrong?

Is there a way to force an IPv4 lookup??

Greetings,

Richard.

----
An OS is like swiss cheese, the bigger it is, the more holes you get!


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