daniel.thorpe at Communigator
Aug 16, 2007, 2:51 AM
Post #6 of 11
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Cool thanks for your reply Michael and you also Steve. I will bite the
bullet and set this up for each sub domain - which considering I have to
create the sub domains anyway its not much of an overhead.
Ok second scenario now. A customer is hosted on gtml1.com or
customer.gtml1.com. And they are told sending from that address is
fully setup. However they want to send from their address. Lets use
another one of my domains as an example -> sgml2.com. (currently this
also has the same SPF record as gtml1.com but I can change this for
testing)
Anyway, the customer is on gtml1.com and wants to send from sgml2.com.
So I inform the customer it is possible if they add an spf record into
their domain to state we are a valid sender of their emails.
Is this the include:gtml1.com setting again? Or.....?
Thanks!
Dan.
-----Original Message-----
From: Michael Breton [mailto:michael [at] breton]
Sent: 15 August 2007 19:31
To: spf-help [at] v2
Subject: Re: [spf-help] SPF for SubDoimains
>----- Original Message -----
>From: "Daniel Thorpe" <daniel.thorpe [at] Communigator>
>To: <spf-help [at] v2>
>Sent: Wednesday, August 15, 2007 2:05 PM
>Subject: RE: [spf-help] SPF for SubDoimains
>
>Is there a way to get around this as I will soon have 50+ sub domains -
>one for each customer - and the list will grow?
>
>So can I create an SPF record that will work for any additional sub
>domain without having to add a SPF record each time?
>
>>The message is telling you that it could not find an SPF record for
the
>>domain,
>>oneinteractive.gtml1.com. Each subdomain needs its own SPF record.
The other poster is correct, you will need to have a separate SPF record
for
each subdomain that sends email.
You can, however, do it a bit easier this way:
If all of the subdomains will need the very same SPF record as the
parent
domain, you could make all the subdomain SPF records the same, like
this:
"v=spf1 include:gtml1.com -all"
....and have your parent domain, gtml1.com stay as it is right now,
maybe
without the "ptr":
"v=spf1 ptr ip4:207.45.127.224/27 ip4:207.45.127.216/29
ip4:207.45.127.208/29 ~all"
In this way, if your email server configuration changes, you only need
to
change one record (the parent) to make changes to all of them.
Michael Breton
p.s. If you run your own DNS servers, some DNS hosting softwares allow
you
to create wildcard records that would allow you to specify a single SPF
record that would returned for EVERY TXT query for all subdomains of
your
parent. Your mileage may vary.
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