this post was submitted on 18 May 2025
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Lemmy Shitpost

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Welcome to Lemmy Shitpost. Here you can shitpost to your hearts content.

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Should I switch to using Arthur.Sulzberger@nytimes.com instead?

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[–] cobysev@lemmy.world 42 points 1 week ago (7 children)

When I was younger, I filled in the first email address that popped into my head in order to fill in these web forms: "joeblow@aol.com."

Turns out, it's an actual email address. I know, because some forms won't let me make up a non-legitimate address, but they always accepted that one.

For over 20 years, I've been using that as my go-to throwaway address anytime a web form blocks me from proceeding.

To whomever owns that address... I'm sorry for all the spam you may have incurred thanks to me. But it's such a perfect generic throwaway name! I've never forgotten it.

[–] domdanial@reddthat.com 24 points 1 week ago* (last edited 1 week ago) (3 children)

Websites don't have an actual check for a legit email... That's why they send confirmation links to click. Forms check that it ends with @something.something, sometimes they can add filters to not allow anything other than the 20 most popular domains. Or they can block addresses with less than 3 characters, because nobody real has those. But most forms you can keyboard smash anything@anything.anything. They just might make a temp account until it's confirmed or something.

But joeblow@aol.com almost certainly was/is real.

Edit: looks like I was also incorrect!

[–] Scrollone@feddit.it 16 points 1 week ago* (last edited 1 week ago) (1 children)

You're partially right, I'd like to add some details: websites can also check if a domain (e.g. example.com) actually exists. So if you smash random letters on your keyboard and you end up with a non-existing domain, a website will be able to stop you from using that address.

More advanced websites also check for an MX record on the domain DNS. If a domain exists but it doesn't have an MX record, then it's not going to be able to receive emails and may be blocked in sign up forms.

Edit: not only an MX record, but also an A record, because if no MX record is present, then the mail is sent to the A record as a fallback (even though, in all honesty, I think this is a very uncommon configuration on the modern internet).

[–] domdanial@reddthat.com 5 points 1 week ago

Wow thank you for the info, I didn't know they had such advanced lookups.

[–] dan@upvote.au 11 points 1 week ago* (last edited 1 week ago) (1 children)

Websites don't have an actual check for a legit email.

Some do. You can connect to an SMTP server and pretend to send an email (send the EHLO, MAIL FROM, and RCPT TO commands, but don't actually send any content). A lot of servers will immediately reject as soon as you provide an invalid recipient email address.

Of course, that doesn't work for any domains with a catchall address (where every address at a domain goes to one mailbox), and some SMTP servers don't reject the email until later (or even just silently ignore emails to invalid addresses) in order to avoid enumeration attacks.

[–] domdanial@reddthat.com 3 points 1 week ago

Huh thank you for the more correct information, I didn't know about those options.

[–] Ziglin@lemmy.world 1 points 1 week ago

My personal email is less than 3 characters before the @, I suppose it's a good thing that I don't use it for non human interactions.

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