Validate Local Address

The email address “jsmith123@example.org”

is a valid e-mail address.

The email address “john.smith.mail@example.org”

is not a valid e-mail address.

The email address “john.smith@example.org”

is a valid e-mail address.

The email address “john.smith@example.org”

is a valid e-mail address.

The email address “jsmith123@mail.example.org”

is a valid e-mail address.