[H-GEN] Strange log.

[Greg Black]

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On 2003-10-05, Joe Skilton wrote:

> Checking for rejected mail hosts:
>   1 hotpop.com
>   1 hanmail.net
>   1 caliburn.humbug.org.au
> 
> I was under the impression that a rejected mail host is someone trying 
> to relay(spam) through my mail server?  If this is correct, then what is 
> caliburn doing on there ?

I see you're using sendmail-8.12.9 and I'm not at all sure what
it does with these things (I last used sendmail-5.x).  As an
aside, and not at all related to your problem, I note that you
don't have an MX record for your domain, although it does have
an A record.  You should really fix that.

Anyway, back to caliburn -- until 20 June 2003, caliburn failed
to comply with the RFC's (specifically RFC 2821 of April 2001)
by giving an non-compliant HELO/EHLO command with a bare
"caliburn".  Lots of hosts would have rejected the connection
because of that.  On 21 June 2003, this faulty behaviour was
corrected and it now gives a FQDN as required by the RFC, so
that's not likely to be your problem now.

One possibility is that some other host was pretending to be
caliburn and your system did a reverse lookup and detected that
it was lying.  I don't know if or when sendmail learnt to do
that.  This is easy to test by typing in some SMTP commands by
hand and observing the responses.

Beyond that, I can't think of anything else right now; no doubt
somebody else will see the light shortly.

Cheers, Greg

-- 
Greg Black <gjb at gbch.net> <http://www.gbch.net/gjb.html>
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