e-Mail Address Setting Values

e-Mail addresses may be up to 256 characters long. One of the following e-mail address formats must be used:

XXXXXXX
Comprised of alphanumerics and the following symbols:
! # $ % & ' * + - / = ? ˆ _ ` { | } ~ .
However, periods (.) cannot be used in the following cases:
IP_address
Comprised of numbers separated by periods (.).
IP addresses within the following ranges may be used:
1.0.0.1~126.255.255.254
127.0.0.1
128.0.0.1~191.255.255.254
192.0.0.1~223.255.255.254
Host_name
Comprised of alphanumerics and hyphens (-) only. The initial character may not be a hyphen.
Domain_name
Comprised of alphanumerics and the following symbols:
- .
Each name element may be up to 63 characters long, and only alphabetic characters may be used for the last element.