[NTLUG:Discuss] Discuss Digest, Vol 110, Issue 8

[John Fields]

Dennis,
Just want to point out that:
1) "SPF" records are just TXT records, surely your DNS provider just needs
for you to provide the contents.  I use this one...

http://www.royhochstenbach.com/projects/spfgenerator/

If they don't give you a control panel to CRUD records yourself, how
serious are they about customer support?  I use dyndns.com with ZERO
complaints.  Also opendns.com are pretty good guys.

2) SPF is really for other mail servers to know what IP addresses you say
are authorized to send mail for your domain.  So if a guy in china wants to
say he is you, any mail server checking SPF will not see his IP address
listed and so Mr china guy's  smtp relay will be refused.

As opposed to procmail or spamassasin which is filtering email after it has
been relayed.

To protect yourself use filtering, to tell the world who can send email for
you - use SPF.  No reason not to use both! :-)