Re: [vps-mail] SPF implimentation

[Jonathan Duncan <jonathan@xxxxxxxxxx>]

I checked out spf.pobox.com and read all about it.  It seems like an
amazing break through.  I too will be interested in where it leads.  Any
idea why Sendmail and Postfix creators have a problems with it?  I
couldn't find mention of SPF on sendmail.org but I did see that the
postfix.org site referred people to spf.pobox.org.

Thanks,
--
Jonathan Duncan
Administrator
801.376.7796
JKD Web Magic
http://www.jkdwebmagic.com
Web Site Hosting and Design


On Tue, 11 May 2004, Weldon Whipple wrote:

> On Tue, 11 May 2004, tim wrote:
>
> > I was wondering if anyone had looked at implementing SMTP
> > authentication with SPF
> > http://spf.pobox.com/
>
> I have spf-milter running on my mail server.
>
> > on how did you go about it?
>
> I followed the instructions posted on the http://spf.pobox.com/ site.
> (They're still a bit rough around the edges, but the milter has stayed up
> and seems to be working as designed.) One of these days I might find time
> to document what I did and put it on technoids.org
>
> > on VPS1, VPS2?
>
> Not yet. (I *think* it ought to work on VPS2 about the same way as it does
> on my real FreeBSD box, though.)
>
> > any hints, it seems like a good idea, just like to hear from someone who
> > has some experience wit it.
>
> I'm still waiting to see how widespread it becomes. Personally, I think it
> is a great idea. However, the architects of sendmail and postfix (and some
> others) still have serious issues with SPF. (The creator of Postfix, for
> example, will unsubscribe any poster to the postfix mailing list who even
> mentions SPF.)
>
> E-mail spam and viruses have become so serious that *something* has to be
> done about them. It will be interesting to see where SPF (and competing
> mechanisms that do similar things) are one year from now ...
>
> It is nice to add SPF to my arsenal of clamav-milter, SpamAssassin,
> procmail, sendmail dnsbl's, SMTP AUTH and the various sendmail access-db
> mechanisms (hmmm... have I forgotten anything?) in the continuing fight
> against SPAM. ... And I now have a significant number of entries that look
> like this in my /var/log/maillog:
>
> May 11 05:03:51 gabriel sm-mta[25564]: i4BB3oAF025564: Milter:
> from=<sobetty3@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>, reject=550 5.7.1 Please see
> http://spf.pobox.com/why.html?sender=sobetty3@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx&;
> ip=69.1.199.144&receiver=gabriel.whipple.org: domain of sender
> sobetty3@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx does not exist
>
> Onward and upward!
>
> Weldon
>
> --
> Weldon Whipple
> weldon@xxxxxxxxxxx
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