Email validation error in domain part

[thundergolfer]

In bouncer/src/bouncer/validators.cljx the email validation uses the following regex:

#"^[^@]+@[^@\\.]+[\\.].+"

I'm interested in that escaped backslash near the end. Why is it there? It allows the following email address to validate:

a@s\coom

I've checked this using an RPC822 validator here and it failed. I think a \ in the domain part is not part of RPC822 spec. Though the "/" is valid I think. The following email address passes that site's check:

hello@gmail/com

So yeah, is the escaped backslash supposed to be an escaped forward slash? What's the reasoning behind the backslash being allowed in the domain part?

Cheers

[Mhsmit]

Found the same issue
abc@hello.com@howare.you also works

Found this one that works for me and made a custom validation function
^(([^<>()\[\]\\.,;:\s@"]+(.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}])|(([a-zA-Z-0-9]+.)+[a-zA-Z]{2,}))$