require_once 'NET/SMTP.php';
mixed Net_SMTP::helo (string $domain)
mixed Net_SMTP::helo
Send the HELO command which is the first part of a mail-sending SMTP transaction where the Internet extender first tries to send mail.
The domain name to say we are.
returns Returns a PEAR_Error with an error message on any kind of failure, or true on success.
throws no exceptions thrown
This function can not be called statically.
