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I also reached out to them on Twitter but they directed me to this form. I followed up with them on Twitter with what happened in this screenshot but they are now ignoring me.

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[-] chitak166@lemmy.world 42 points 9 months ago
[-] Syndic@feddit.de 147 points 9 months ago

Nah, it's just a old school chat bot following a predefined flow chart. And in this flowchart someone implemented an improper email check.

It's pretty much the same as if there was just a website with an email field which then complains about a non valid email which in fact is very valid. And this is pretty common, the official email definition isn't even properly followed by most mail providers (long video but pretty funny and interesting if you're interested in the topic).

[-] dan@upvote.au 28 points 9 months ago* (last edited 9 months ago)

You can use symbols like [ ] . { } ~ = | $ in the local-part (bit before the @) of email addresses. They're all perfectly valid but a lot of email validators reject them. You can even use spaces as long as it's using quotation marks, like

"hello world"@example.com

A lot of validators try to do too much. Just strip spaces from the start and end, look for an @ and a ., and send an email to it to validate it. You don't really care if the email address looks valid; you just care whether it can actually receive email, so that's what you should be testing for.

[-] itsralC@lemm.ee 18 points 9 months ago

Not even a dot: TLDs are valid email domains. joe@google is a correct address.

[-] RubberElectrons@lemmy.world 0 points 9 months ago

Mmm... That doesn't seem right, it's usually gotta be fully expanded to at least a particular A record/MX.

How would you tie the tld itself to an MX?

[-] TwitchingCheese@lemmy.world 15 points 9 months ago

TLD is just another DNS layer, try an SOA or NS lookup for "com." those are obviously hosted somewhere. Hell the "." at the end is even another layer with the root nameservers. You'd probably trip up a bunch of systems that filter on common convention rather than the actual RFC, but you could do it.

[-] RubberElectrons@lemmy.world 2 points 9 months ago

How the hell were the original rfc designers so creative as to result in such a flexible system?? It's gets crazier the more you look at it.

[-] PoolloverNathan@programming.dev 5 points 9 months ago

It makes the system as a whole simpler. Your computer only needs to remember one root DNS server (although most computers allow setting 4 for redundancy) as opposed to one DNS server for each TLD, and it also makes adding TLDs easier.

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this post was submitted on 15 Dec 2023
1549 points (99.1% liked)

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