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Date:      Wed, 26 Apr 2000 19:20:44 +0930
From:      Phil Pittard <vk5ham@seol.net.au>
To:        Michael <cadaver@tucu.net>
Cc:        Chris Fedde <chris@fedde.littleton.co.us>, freebsd-questions@FreeBSD.ORG
Subject:   Re: Need help reading my maillog
Message-ID:  <3906BBF4.41977921@seol.net.au>
References:  <Pine.BSF.4.10.10004251659300.30468-100000@tucu.net>

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It appears that someone may be attempting to use your system to relay
through (ie/ send SPAM) - Spammers often use non-existent
domainnames/fake local usernames etc etc etc, to try & hide their
tracks!!
If you want to check whether you system is capable of allowing this type
of unwanted access ,try installing "rlytest". As long as your sendmail
is configured to refuse this sort of relay its fine... they will go
somewhere else... if they can use your system they will ram masses of
crap through your system into their victims system.

Michael wrote:
> 
> 
> Apr 25 10:09:52 tucu sendmail[29625]: KAA29625: ruleset=check_mail,
> arg1=<mike1123@2hb.ne>, relay=lucy.fukuda.is.uec.ac.jp [130.153.154.151],
> reject=501 <mike1123@2hb.ne>... Sender domain must exist
> Apr 25 10:09:52 tucu sendmail[29625]: KAA29625: from=<mike1123@2hb.ne>,
> size=0, class=0, pri=0, nrcpts=0, proto=ESMTP,
> relay=lucy.fukuda.is.uec.ac.jp [130.153.154.151]


-- 
Phil Pittard
IT Consultant
South East Network Solutions
Mobile: 0409 314493
http://vk5ham.au.com
Email: vk5ham@vk5ham.au.com
       vk5ham@seol.net.au



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