Re: [EAI] Re: SPF and DKIM

[Harald Alvestrand <harald at alvestrand.no>]

abel wrote:
> Thanks for Kari comments,
> These remind us to pay attention to more details in SPF and DKIM
>
>   
> > On general if you have
> >      ehlo twnic.net.tw
> >      mail from: <UTF8 at twnic.net.tw>  ALT-ADDRESS=forwarder at gateway.example
> >
> >
> > if gateway.example ia providing forwarding service, it practically
> > can not provide SPF records --  not providing SPF records is part
> > of service.
> >     
> Yes, but users/clients dont know whether their provider has SPF record in
> their ALT-ADDRESS,
> If there are SPF in thoes domain include '-all' , that maybe cause their
> mail to be rejected.
> Mail adminstrator is hard to explains those issue to their clients.
>   
I think the brutal answer is "don't do that".
If you use an email address in an ALT-ADDRESS, that needs to be an email 
address controlled and managed by someone who's actively supporting 
UTF8SMTP - including mangling the SPF records (if any) to allow the 
gateways to send the messages as needed.

                   Harald


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