Assuming you mean this (notice the dots):
Domain.com. CNAME x.y.com.
www CNAME x.y.com.
No, this does not work. You're forgetting what goes around the example
records:
domain.com. IN SOA ...
domain.com IN CNAME x.y.com.
domain.com IN NS ...
www.domain.com. IN CNAME x.y.com.
Oh, rig
At the same time, the browser developers, almost without exception, refuse
to implement SRV because they don't like the idea that they might have to
do another DNS lookup prior to displaying a web page. And they lobby the
W3C pretty hard to not standardize SRV for HTTP.
That's a pretty serious i
Just curious, is there a fundamental reason you have to oppose this
beyond simply the scale?
It's a cargo cult style extension of a not particularly useful IPv4
convention to IPv6. A much more useful convention that happens to be
easier to implement is that hosts with static addresses have rD
The reject will only work when DKIM AND SPF are failing.
So you have to setup SPF too. -all does the magic.
Actually, no. DMARC only passes when DKIM or SPF passes. In the absence
of any SPF, that's not a pass so DMARC will fail.
It's a good idea to publish the SPF -all but in this case DMA
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