[users] Mail from list detected as Spam

Dries Verachtert dries at ulyssis.org
Sat Jan 27 22:27:51 CET 2007


On Friday January 26 2007 4:50 pm, Dries Verachtert wrote:
> On Friday January 26 2007 3:33 pm, you wrote:
> > I wish I had spoken up earlier.
> >
> > The key issue is that the round trip look-ups work:
> > 	IP address => host name => IP address
> > gives the original IP address.  That worked before for
> > 213-193-131-241.adsl.easynet.be.
> >
> > Now we get:
> > 	213.193.131.241 => pooch.vmhosting.org. => 127.0.0.1
> > which will not work for those mail servers that check.
> >
> > The pooch A record needs to get fixed, or some other name should be used
> > (e.g. rpmforgelist) so that the round trip look-up will return the
> > original IP address.  I assume the 127.0.0.1 IP address for pooch was
> > created to satisfy some need, so you may not be able to change the pooch
> > A record.
> >
> > Requiring the round trip look-up to work is fairly effective at limiting
> > spam.
>
> Woops! I've sent a mail to change this too.. i'll let you know when it's
> fixed!

I guess it's ok now:

[dries at delirium rpms]$ nslookup pooch.vmhosting.org
Server:         195.162.196.3
Address:        195.162.196.3#53

Non-authoritative answer:
Name:   pooch.vmhosting.org
Address: 213.193.131.241

[dries at delirium rpms]$ nslookup 213.193.131.241
Server:         195.162.196.3
Address:        195.162.196.3#53

Non-authoritative answer:
241.131.193.213.in-addr.arpa    name = pooch.vmhosting.org.

Authoritative answers can be found from:

[dries at delirium rpms]$ telnet 213.193.131.241 smtp
Trying 213.193.131.241...
Connected to pooch.vmhosting.org (213.193.131.241).
Escape character is '^]'.
220 pooch.vmhosting.org ESMTP Postfix
QUIT
221 Bye
Connection closed by foreign host.

kind regards,
Dries



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