pub fn esmtp_value(input: &[u8]) -> IResult<&[u8], &str>Expand description
Any CHAR excluding “=”, SP, and control characters. If this string is an email address, i.e., a Mailbox, then the “xtext” syntax [32] SHOULD be used.
esmtp-value = 1*(%d33-60 / %d62-126)