spf-discuss
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Re: [spf-discuss] forwarded mail being bounced (by spf check)

2007-01-27 04:40:49
At 12:47 PM 1/26/2007 -0500, Dick St.Peters wrote:
Graham Murray writes:
> Per Jessen <per(_at_)computer(_dot_)org> writes:
>
> > 1. I send an email to "peter(_at_)theirdomain" - my return address
> > is "bounces(_at_)spamchek(_dot_)com".
> > 2. Apparently this is forwarded from "peter(_at_)theirdomain"
> > to "peter(_at_)anotherdomain".  This appears to be done by the mailserver
> > for <theirdomain>.
> > 3. The mail server at <anotherdomain> rejects it due to <theirdomain>
> > not being listed as a mailserver for <spamchek.com>.
> >
> > Should this really be happening?
>
> IMHO yes it should. But what you should now do is change your address
> book and send mail direct to "peter(_at_)anotherdomain" rather than to the
> forwarding address. This would both get round the problem of the SPF
> rejection and cut down on the volume of mail (as it would only be sent
> once, to the final destination, not twice, first to the forwarder and
> then to the final destination).

What this doesn't take into account is *why* addresses are forwarded.
For example, a common forwarding use is "role" addresses, such as
"treasurer(_at_)organization(_dot_)org" where a new treasurer is elected
periodically, or "service(_at_)company(_dot_)com" where multiple people receive
the mail.  In the latter case, sending mail directly to a forwarding
destination address may result in a request sitting in the mailbox of
someone who is on vacation, when the request could have been handled
by any of the other service@ recipients.

People often have their mail forwarded to a friend's or relative's
email account when away on holiday visiting the friend or relative.
These destination account sometimes are never used by their nominal
users, and mail sent to them because previous mail was forwarded there
may go unseen for months.  Alternatively, it may be seen but not be
recognized and simply be deleted.

These are very good examples.  Others where forwarding is essential include:
-- professional organizations, like ieee.org, that provide "permanent" addresses for their members. -- my homeowners association, for which I provide a domain name, web page, and email services. Homeowners can communicate with each other via forwarded addresses, and are not expected to change their regular email service provider or keep track of everyone else's "real" email address. -- forwarders that provide some special service, like authentication and reputation checking, before forwarding to the recipients current address.

-- Dave

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