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dns resolution for emails may contain underscores #20

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sihrc opened this issue Oct 21, 2015 · 0 comments
Open

dns resolution for emails may contain underscores #20

sihrc opened this issue Oct 21, 2015 · 0 comments

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@sihrc
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sihrc commented Oct 21, 2015

While a hostname is not supposed to contain an underscore, a DNS entry can, which I think ends up being more relevant to what valid email addresses exist.
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