Re: is my sendmail box being exploited?

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On Tuesday 23 December 2003 20:43, Chris W. Parker wrote:
> Hi gang.
>
> Yesterday and today I've received three strange emails. Two came
> yesterday and supposedly came from "Dino"@server.domain.com
> (server.domain.com of course being replaced by the actual fqdn).
> Today's messages was "from" "Goddard Chuck"@server.domain.com.
>
> I'm using the default sendmail install plus one update (me thinks)
> on RH8. According to "telnet localhost 25" I'm running sendmail
> 8.12.8/8.12.5.
>
> The server.domain.com is actually an email gateway to our ms
> exchange server. The sendmail server doesn't actually do any
> sending of email except to receive email for our domain and forward
> it to the exchange server. Except for the box being compromised or
> exploited in some way how else could the email appear to have come
> from @server.domain.com? Does it sound like the box is being
> exploited?
>
> I can send the email headers to anyone that would like to see them.
>
>
> Thanks,
> Chris.

You'll probably have to take a look at the full headers of the 
message(s) in question. They should be able to shed more light on the 
story.

Regards,  Mike Klinke


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