Mailing List Archive

----- Original Message -----
From: "Joshua Pyle" <jpyle@mansellgroup.com>
To: <spf-help@v2.listbox.com>
Sent: Friday, August 27, 2004 9:46 AM
Subject: [spf-help] SPF Wild Carding


> SPF Wild Carding
>
>
>
> I am not sure if this has been asked or not, but with the limited about
> of information available, I thought this would be the best start.
>
>
>
> I have over 100 clients that user the domain
> clientname.co.mansellgroup.net. Can I wildcard this into my DNS so that
> I will not have to have a separate entry for each of my clients?
>
>
>
> Right now, I wildcard their A record and MX record, so, that's why I am
> asking about wildcarding the SPF entry.
>
>
>
> Thoughts ?

Yes, you can wildcard it.

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On Fri, Aug 27, 2004 at 09:46:12AM -0400, Joshua Pyle wrote:
> SPF Wild Carding
>
>
>
> I am not sure if this has been asked or not, but with the limited about
> of information available, I thought this would be the best start.
>
>
>
> I have over 100 clients that user the domain
> clientname.co.mansellgroup.net. Can I wildcard this into my DNS so that
> I will not have to have a separate entry for each of my clients?
>
>
>
> Right now, I wildcard their A record and MX record, so, that's why I am
> asking about wildcarding the SPF entry.
>
>
>
> Thoughts ?

Well, make sure to understand the basic rules of dns. If you have an
explicit A/MX/.. record for some domain (so not a wildcard record) you
need to explicitly add the spf TXT record for that domain.

I understand that all the *.co.mansellgroup.net domains for your clients
are defined by a wildcard record, if this is the case you can indeed put
the TXT record as a wildcard record.

Note that there are some subleties with the level of the domain.

Koen

--
K.F.J. Martens, Sonologic, http://www.sonologic.nl/
Networking, embedded systems, unix expertise, artificial intelligence.
Public PGP key: http://www.metro.cx/pubkey-gmc.asc
Wondering about the funny attachment your mail program
can't read? Visit http://www.openpgp.org/

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I was able to put in

*.co as a TXT entry which then included mansellgroup.net 's SPF entry. Worked great thanks.

-----Original Message-----
From: Koen Martens [mailto:spf@metro.cx]
Sent: Sat 8/28/2004 5:37 PM
To: spf-help@v2.listbox.com
Cc:
Subject: Re: [spf-help] SPF Wild Carding



On Fri, Aug 27, 2004 at 09:46:12AM -0400, Joshua Pyle wrote:
> SPF Wild Carding
>
>
>
> I am not sure if this has been asked or not, but with the limited about
> of information available, I thought this would be the best start.
>
>
>
> I have over 100 clients that user the domain
> clientname.co.mansellgroup.net. Can I wildcard this into my DNS so that
> I will not have to have a separate entry for each of my clients?
>
>
>
> Right now, I wildcard their A record and MX record, so, that's why I am
> asking about wildcarding the SPF entry.
>
>
>
> Thoughts ?

Well, make sure to understand the basic rules of dns. If you have an
explicit A/MX/.. record for some domain (so not a wildcard record) you
need to explicitly add the spf TXT record for that domain.

I understand that all the *.co.mansellgroup.net domains for your clients
are defined by a wildcard record, if this is the case you can indeed put
the TXT record as a wildcard record.

Note that there are some subleties with the level of the domain.

Koen

--
K.F.J. Martens, Sonologic, http://www.sonologic.nl/
Networking, embedded systems, unix expertise, artificial intelligence.
Public PGP key: http://www.metro.cx/pubkey-gmc.asc
Wondering about the funny attachment your mail program
can't read? Visit http://www.openpgp.org/

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