Re: SPF
- From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
- To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
- Date: Tue, 8 Feb 2005 23:22:27 -0800
What do you mean by support SPF?
There are 2 sides to SPF: Publishing and querying.
As Danny said, to Publish your SPF record requires a valid REVDNS for your
e-mail server public IP and a TXT record in your DNS zone.
Querying is a whole other ball of wax.
John Tolmachoff
Engineer/Consultant/Owner
eServices For You
> -----Original Message-----
> From: Danny [mailto:nocmonkey@xxxxxxxxx]
> Sent: Tuesday, February 08, 2005 6:37 PM
> To: [ExchangeList]
> Subject: [exchangelist] Re: SPF
>
> http://www.MSExchange.org/
>
> On Wed, 9 Feb 2005 12:05:14 +1100, adrian@xxxxxxxxxxxxx
> <adrian@xxxxxxxxxxxxx> wrote:
> > http://www.MSExchange.org/
> >
> >
> >
> > What do I need my ISP (who maintains our external DNS ) to do for us to
> > support SPF?? We have several domains and MX's all pointing back to the
one
> > box. Is only one reverse DNS entry required? Will this support all our
> > domains? Sorry for the ignorance but this is one area I am quite new
to.
> > We run split-brain DNS (I assume that internal DNS is of no consequence
in
> > relation to SPF.
>
> Your ISP would add a TXT record in the DNS for your domain, which, in
> SPF format, would specify the host or IP address of all the externally
> (Internet) accessible servers that you would send email from. Check
> out the SPF wizard here: http://spf.pobox.com/
>
> ...D
>
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