Hello Albertus, Yes!!. works now.

Conflict with lines:

Why ???

// Check MX record.
// The idea for this is from reading the UseBB blog/announcement. :)
if ($config)
{
list(, $domain) = explode('@', $email);

if (phpbb_checkdnsrr($domain, 'A') === false && phpbb_checkdnsrr($domain, 'MX') === false)
{
return 'DOMAIN_NO_MX_RECORD';
}
}


Thanks