Date: Sat, 6 Jan 2007 13:32:09 +0000 From: RW <fbsd06@mlists.homeunix.com> To: freebsd-questions@freebsd.org Subject: Re: Mail being sent from my domain... Message-ID: <20070106133209.0cdda901@gumby.homeunix.com> In-Reply-To: <459F1719.9010407@optusnet.com.au> References: <00bb01c73134$b061fa60$0a32a8c0@rob> <459F0D1B.7090608@tandon.net> <459F1719.9010407@optusnet.com.au>
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On Sat, 06 Jan 2007 14:27:21 +1100 Colin House <col-h@optusnet.com.au> wrote: > Check out http://openspf.org - implementing SPF will help prevent > spoofed emails from being delivered and will start to cut down on the > "backscatter" This often claimed, but I don't really see how it's going to help much. Any benefit relies on an initial MTA/MSA refusing to relay for domains that don't set the correct SPF records, i.e. it replies on the security of MTA's that are owned, controlled or abused by spammers. On the other hand setting SPF records means that more spam using the domain will be rejected at the SMTP level. This actually leads to more backscatter.
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