Date: Sat, 14 Aug 2010 13:15:07 -0500 From: Noel Jones <noeldude@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Open Mail Relay Message-ID: <AANLkTinPu8v4DnS9N=FLcPUmLRmkbeBzyAEu=_E1284=@mail.gmail.com> In-Reply-To: <20100814172307.035661065697@hub.freebsd.org> References: <20100814172307.035661065697@hub.freebsd.org>
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On Sat, Aug 14, 2010 at 8:29 AM, <peter@vfemail.net> wrote: > > I have a machine running FreeBSD, sendmail and majordomo. =A0I have someo= ne who is on one of those majordomo lists complaining that they are receivi= ng spam from me. =A0The complainer says I have an open mail relay that I ne= ed to fix. Insufficient data. The person reporting the spam needs to provide you with a copy of the mail, including all headers, so you can see if it came from your server, or who sent it through your server. Most likely suspects are another list member's infected machine sending out spam to the list, or an outright forgery that never went through your server. > > I went to <http://www.abuse.net/relay.html>http://www.abuse.net/relay.htm= l to test the machine using its IP address. =A0Abuse.net gives a clean bill= of health, saying relaying was denied in 17 separate tests. Then it's unlikely your server is an open relay. But you may need to add some spam filtering to your lists, or at least restrict posting to members only. -- Noel Jones
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