Re: Re[2]: Office for Linux

Amy (amy@internet-frontier.net)
Fri, 1 Aug 1997 12:17:37 -0700 (PDT)

This just came up last week or so - You can use the /etc/hosts.deny to
list hosts that are not allowed access to certain ports/services.
You have to have sendmail running from inetd, rather than as a daemon, to
have it honor the /etc/hosts.* files, but it works.

I just had to do this for a major spammer that thought he could simply
call up his other ISP and still use my mail server. Since he had a dynamic
IP, I had to block all mail fromt he entire domain until the situation was
resolved. :(

Amy

On Thu, 31 Jul 1997, David Beitler wrote:

> Someone is using my system as an email relay. Is there any way I can
> modify sendmail.cf, or otherwise set my configuration up to prevent
> this.
>
> Here is an example logfile clip.
>
> All of the relayed emails, come from this same name/address.
>
>
> sendmail[15761]: OAA15761: from=<CommNOW_Robot@commnow.com>,size=4550,
> class=0, pri=34550, nrcpts=1, msgid=<2400845823.1896353@commnow.com>,
> proto=ESMTP, relay=macromac.commnow.com [157.151.203.4]
>
>
> David Beitler
> dbeitler@ndcwireless.com