On Tue, Jan 27, 2004 at 09:09:46PM -0500, Matthew Barr wrote:
| Obviously the recieving party will have the data of the softfaill. How
| do we get it back to the domain owners? Would a soft bounce to the
| original email get the user to talk to the SA?
There are two ways to get data back:
1) lightweight: you can do an "exists" mechanism.
20040127-21:15:17 mengwong(_at_)dumbo:~% dig +short altavista.com txt
"This domain sends no email"
"Null SPF is for tracking purposes only"
"All mail claiming to be from altavista.com is forged"
"v=spf1 +exists:CL.%{i}.FR.%{s}.HE.%{h}.null.spf.altavista.com -all"
2) heavyweight: you can add a report= modifier and wait for receiver
MTAs to start supporting that.
http://spf.pobox.com/extensions.html
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