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Re: SPF [ Was: Re: Anti-recommendation: Comcast.]



 Matt Shields wrote: 
> If Comcast is going to require my customer's use Comcast's outbound smtp 
> servers, then that doesn't help me control what type of customers are on 
> my servers.  In fact it means I can't use Domain Keys or SPF for my 
> customers. 

Actually, you can still use SPF in this case, since Comcast has their own 
SPF record. There is a special syntax for saying basically "any server in 
domainX's SPF record can also send mail 'from' my domain". 

The actual txt record looks like: 

v=spf1 <snip> include:comcast.net ~all 

Here's a nice little site for building your SPF record that my registrar 
actually suggested: 
http://old.openspf.org/wizard.html

Matt 

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