OT (again): SA-SPF opinion

[Stephen Swaney]

> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
> Behalf Of Ugo Bellavance
> Sent: Thursday, May 26, 2005 4:23 PM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: OT (again): SA-SPF opinion
>
> >>
> >>I felt that SA's SPF rules are not very convincing, and I didn't feel
> >>like playing with the scores, so I implemented spfmilter.  I decided
> >>to block any message that would have a 'fail' result.
> >>
> >>I have written a doc for implementing the milter on FC1, please let me
> >>know if you want to see it.
>
> It'll be on the wiki soon.
>
> >
> >
> > Ugo,
> >
> > Yes, please let me know how to receive the document. Did you also use
> some
> > form of SRS also? I understand this is required for forwarding to a
> server
> > that checks SPF and hard fails them.
>
> I don't think I need SRS since I'm not relaying for anyone.
>

I believe that SRS, Sender Rewriting Scheme, is only required if you are
relaying form you SPF hub. A typical example would be an ISP who is relaying
email from a home pc or a business hub that sends their outbound email
through the ISP's "smart relay". The ISP in this case has to rewrite the
header to make it look like the mail was sent From the smart relay.

Sounds simple and it is (hopefully ;) for AOL and the larger ISPs but there
are many many small ISPs and small mailhubs that relay for friends and
neighbors that will be a long time implementing SRS :(


Steve

Steve Swaney
President
Fort Systems Ltd.
Phone: 202 338-1670
Cell: 202 352-3262
www.fsl.com
steve.swaney at fsl.com

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