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SPF Optimizer: Add "redirect:" support (#506)

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FYI: The support is very minimal. It only supports redirect if it is the last item in an SPF record. At that point, it is equivalent to include.

* In SFP, treat redirect like a special include.
* Document SPF redirect: limited implementation.
This commit is contained in:
Tom Limoncelli
2019-06-19 18:46:56 +01:00
committed by GitHub
parent 4a7a5515a0
commit 2d9d93653b
3 changed files with 44 additions and 3 deletions
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docs/spf-optimizer.md
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@@ -178,6 +178,10 @@ could exceed 512 bytes, and will require EDNS or a TCP request.
3. Dnscontrol does not warn if the number of lookups exceeds 10.
We hope to implement this some day.
4. The `redirect:` directive is only partially implemented. We only
handle the case where redirect is the last item in the SPF record.
In which case, it is equivalent to `include:`.
## Advanced Technique: Interactive SPF Debugger