On 11. Mrz 2004, at 12:51, Julian Mehnle wrote:
That's a subset of what SPF[1] does. Until the SPF people manage to make a
patch to properly integrate SPF (and SRS, a closely related technology)
into Courier,
[1] http://spf.pobox.com
SPF is a cool way to use existing technology (DNS) to implement some kind of control over MAIL FROM. Yet as I understand it, nameservers around the globe need to have the IN TXT "v=spf1..." entry to enforce this.
For the purposes of protecting your own domain, only *your* DNS servers need the TXT entry.
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