[Beowulf] Beowulf List adminstrivia: SPF now published for beowulf.org
becker at scyld.com
Fri Jan 9 17:24:17 EST 2004
The beowulf domain now publishes Sender Permitted From records.
Detailed information on SPF is at
but here is a quick summary:
SPF is an advisory field in the domain name record that can
help mail receipients reject spam that pretends to come from popular
mailers such as beowulf.org.
SPF doesn't require you to do anything. It does allow you or your ISP
to set up better spam filtering rules, if you choose.
To see what SPF "really does", run a DNS name server query on
beowulf.org and check out the "additional text" records. There is a
record for SPF version 1:
beohost$ host -t txt beowulf.org
beowulf.org. text "v=spf1 a mx ptr -all"
This says "If you get a message from beowulf.org, it must come from
A the primary host for beowulf.org
MX the mail exchange hosts for beowulf.org
PTR any host whose domain name ends in .beowulf.org
-all and no other machine
I don't expect even the slightest inconvenience from providing SPF
records for beowulf.org. Please let me know if it causes any problems.
Donald Becker becker at scyld.com
Scyld Computing Corporation http://www.scyld.com
914 Bay Ridge Road, Suite 220 Scyld Beowulf cluster systems
Annapolis MD 21403 410-990-9993
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