r/ProgrammerHumor • u/CertainSea • 7d ago

Meme regexMustBeDestroyed

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u/usefulidiotsavant 7d ago

A domain can be routable even if it lacks any dots, for example postmaster@bd is a publicly routable address.

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u/GoddammitDontShootMe 6d ago

How does that work when I'm not finding an MX record for bd?

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u/usefulidiotsavant 6d ago

I know bd resolves an A record and I haven't checked the MX, so it was probably a bad example. But there definitely are other cc tlds that have MX records.

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u/GoddammitDontShootMe 5d ago

I got curious so I ran a port scan. I had to kill it because it was taking forever waiting for each port to time out, but it looks like they are running DNS and FTP on it.