Date: Tue, 4 Aug 1998 08:34:05 -0700 (PDT) From: David Wolfskill <dhw@whistle.com> To: bh@synergy.transbay.net, frankg@idfw.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Security Message-ID: <199808041534.IAA08350@pau-amma.whistle.com> In-Reply-To: <Pine.BSF.3.96.980803162740.26879A-100000@synergy.transbay.net>
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>Date: Mon, 3 Aug 1998 16:31:21 -0700 (PDT) >From: Brandon Huey <bh@synergy.transbay.net> >fortunately, that's not the moral for the fine members of this list. >2.2.6 uses 8.8.8, so relaying is not disabled by default. >upgrade to 8.9.1, it has extended anti-spam functionality. >On Mon, 3 Aug 1998, Frank Griffith wrote: >> If someone came in, unathorized that is, and used >> my mail server to send mail, which log file would show me >> this intrusion? How can I prevent this from happening again? Also, sendmail (certainly as of 8.8.8; I haven't set up 8.9.x yet) can be compiled with tcp_wrappers support, which allows you to use the same sort of controls tcp_wrappers supplies for access to your SMTP server. I've done this at home, and find it useful. Among other things, I can disallow known spam sites from connecting to my SMTP server at all.... The same could hold true for other forms of abuse. I don't recall if the support in question involves logging the attemps; if it does, the log would be something such as /var/log/tcpd. (As someone else pointed out /var/log/maillog* would be where to see the logs of the mail transiting your system. That's a somewhat different issue.) david -- David Wolfskill UNIX System Administrator dhw@whistle.com voice: (650) 577-7158 pager: (650) 371-4621 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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