>
> >I can't (nor wish) to stop my users accessing my email servers from other
> >than my IP addresses but I can't see how I can allow this and at the same
> >time fully implement the usefulness of SPF.
>
> Ideally, you would have all your users use your mailserver.
>
How can you force this?
> But if that isn't an option for you, "+mx ?all" is the answer. Anyone
> sending mail from your mailserver gets "credit" (either whitelisted or
> their E-mail less likely to be marked as spam),
I was/am thinking not from the point of view of Declude Junkmail rather than
another mail server that utilises SPF - sees that it FAILS and then drops
the connection and refuses to deliver it.
I should think that Whitelisting mail from users that are known to use
remote computing would be quite easy to do as a workaround for local
delivery.
I'm beginning to think that I may not fully appreciate how SPF is supposed
to work.
and anyone not
> sending from
> your mailserver isn't penalized. If your domain is frequently forged in
> spam, you could get creative and do things like add
> "-ptr:customer.swbell.net -ptr:dsl.earthlink.net
> -%{ir4}.bl.spamcop.net" to
> further restrict how spammers can use your domain (saying that your users
> couldn't send mail using your domain if they were coming from a SW Bell
> user IP or Earthlink DSL account or any IP listed in Spamcop).
>
> -Scott
> ---
> Declude JunkMail: The advanced anti-spam solution for IMail mailservers.
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> vulnerability detection.
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