Dave Lugo wrote:
> On Fri, 8 Dec 2006, Marc Perkel wrote:
>   
>> One of the problems is that when you're in the spam filtering business
>> if a spam gets through then it appears that I'm the source of the spam.
>> People like gmail, yahoo, hotmail, comcast are also getting blacklisted
>> every now and then.
>>
>>     
>
> Mabe you should have the recipient domain WL your IP.
>   
I try to get them to do that but many hosting companies won't. I'm also 
subject to rate limiting which delays mail.

>   
>> Then there are companies that are so swamped with spam that they change
>> the rules and I get caught in the rule change. Godaddy had a server of
>> mine blacklisted yesterday because my HELO didn't match my IP. Then
>> there's SPF which totally sucks where the customer's server rejects
>> email because SPF doesn't match when I'm forwarding email. So one
>> customer is losing their Netflix email.
>>     
>
> This is why SRS exists.  Here's one implmentation for exim:
>
> http://www.infradead.org/rpr.html
>
>   

SRS would seriously break a lot of other things I support. SPF is broken 
and should not be used.
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