Re^4: Practical e-mail address validation (flexes)

[tye]

You appear to mean "directly before the @". Thanks for the clarification. Email::Valid::Loose further clarifies:

Email::Valid::Loose is a subclass of Email::Valid, which allows . (dot) before @ (at-mark). It is invalid in RFC822, but is commonly used in some of mobile phone addresses in Japan (like docomo.ne.jp or jp-t.ne.jp).

So the items identified so far:

• Allow /\.\@/
• Disallow /\@.*%/ (actually more, since you answered my question in the negative in a private /msg and promised more details later)
• Disallow CFWS w/in the address
• Require /\@.*\./
• Require /\.[a-zA-Z]{2,}$/
• Require RFC1035-compliant domain (except empty ones)
• Extend RFC1035 to allow domain labels that start with a digit
• Disallow quoting (usually of $local_part)
• Disallow escaping (usually of $local_part)
• Disallow /\+.*\@/
• Disallow "group"s (/$display_name:$mailbox_list;/)
• Disallow "name-addr" (/$display_name?$angle_addr/)
• Disallow "obs*" (obs-angle-addr, obs-mbox-list, obs-addr-list, obs-local-part, obs-domain)