Dremor comments on Everyone knows what an email address is, right? (Quiz)

[–] Dremor@lemmy.world 10 points 1 year ago (5 children)

A domaine without tld (me@home) is a valide address. I saw an email server being used as a mqtt-like server this way (it is very old and predate those software).

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[–] frezik@lemmy.blahaj.zone 4 points 1 year ago (4 children)

An address without a domain is irrelevant for a signin/registration form. Which is like 90% of the code being written in the wild to validate addresses.

If you're writing an email server, then you need to care about all these details. Most of us never will.

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[–] ChaoticNeutralCzech@feddit.org 4 points 1 year ago (3 children)

Hey! IPv6 is valid in the inter-network context and needs no dots!

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[–] frezik@lemmy.blahaj.zone 6 points 1 year ago (2 children)

You gonna fill an IPv6 address for your email server into the DoorDash signin page?

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[–] zurohki@aussie.zone 13 points 1 year ago (1 child)

Don't be ridiculous, I'm going to use an open source password manager to fill an IPv6 address for my email server into the DoorDash signin page.

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[–] frezik@lemmy.blahaj.zone 2 points 1 year ago

I know you're being facetious, but I'm thinking through the implications of someone actually doing this. ISPs aren't always handing out static IPv6 prefixes for some damn reason, so you can't count on that address staying the same when self-hosting. Even if you can, you don't know what will happen when you change ISPs.

So yeah, really bad idea regardless.

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