Comment on I'm locked out of my 6 year old Chipotle account because they now say my email address is invalid when I login. Here is me asking for their help:

Crass_Spektakel@lemmy.world ⁨11⁩ ⁨months⁩ ago

No, dots are NOT necessary. Actually you do not even need to supply a domain or a top level domain because mails then default to the default system which is usually localhost.

But even for routed mail there doesn’t need to be a dot.

There is still valid Bang-Adressing for UUCP routed emails:

!bigsite!foovax!barbox!me

This is a valid email which basically means “send my email to bigsite, from there to foovax, then to barbox, to the user me.”

A couple of years ago I made Hotmail crash by sending a mail to googlemail.de!hotmail.com!googlemail.com!hotmail.de!googlemail.de!hotmail.com!googlemail.com!hotmail.de!myuseraccount - their server literally crashed completely all over the world. I am so proud of myself but then it was their fault for not complying to RfC822.

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