Re:How not to check the validity of an email address
by drdaeman on Wednesday September 04, 2013 @10:35AM
(#6327823)
> @"^[^@]{1,}[@]{1}[^@]{1,}\.{1}[^@]{1,}$"
Is not
> [string]@[string].[string]
It's mere ^.+@.+\..+ (in both POSIX extended and PCRE dialects) that properly represents the latter.
And even such regexp filters out many technically-valid but obscure cases of RFC-compliant email addresses (for example ai, io, kh and ws TLDs have MX records, and supposedly hostmaster@io should be a valid email address).
Is not
> [string]@[string].[string]
It's mere ^.+@.+\..+ (in both POSIX extended and PCRE dialects) that properly represents the latter.
And even such regexp filters out many technically-valid but obscure cases of RFC-compliant email addresses (for example ai, io, kh and ws TLDs have MX records, and supposedly hostmaster@io should be a valid email address).