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* Add multiple string support to SPF optimizer Notes: * This implements [RFC 4408][rfc] for the SPF optimizer. Allowing for more SPF records to fit within the 10 lookups by using multiple strings. * By default the max size of the TXT remains at 255. Meaning users will still only get a single 255 length string unless they modify `txtMaxSize` and opt into this feature. * The general recommendation when using multiple strings for TXT records is to keep the size within a single UDP packet. It seems like the maximum size for this depends on a bunch of factors that are sometimes outside of your control. A similar tool has a [formula for estimating the maximum allowed size][formula]. However I felt giving a user configurable size would fit with the current configuration style that dnscontrol has. Similar to how dnscontrol recommends only flattening a record if absolutely needed, I can see this length being increased by only enough to get you within 10 lookups. [rfc]: https://tools.ietf.org/html/rfc4408#section-3.1.3 [formula]: https://github.com/oasys/mkspf/blob/master/Overhead.md * Add a nice comment for the Chunks function |
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| _functions | ||
| _includes | ||
| _layouts | ||
| _providers | ||
| assets | ||
| css | ||
| flattener | ||
| public | ||
| _config.yml | ||
| adding-new-rtypes.md | ||
| alias.md | ||
| bug-triage.md | ||
| caa-builder.md | ||
| check-creds.md | ||
| examples.md | ||
| get-certs.md | ||
| get-zones.md | ||
| getting-started.md | ||
| index.md | ||
| js.md | ||
| migrating.md | ||
| nameservers.md | ||
| notifications.md | ||
| opinions.md | ||
| provider-list.md | ||
| release-engineering.md | ||
| runDocker.sh | ||
| spf-optimizer.md | ||
| toc.md | ||
| unittests.md | ||
| why-the-dot.md | ||
| writing-providers.md | ||