Hi! I have a few questions regarding the HELO/EHLO checks.
According to the documentation: reject_non_fqdn_helo_hostname Reject the request when the HELO or EHLO hostname is not in fully-qualified domain or address literal form, as required by the RFC. reject_invalid_helo_hostname Reject the request when the HELO or EHLO hostname is malformed. Is there a good reason to use both checks? When is one rule triggered and not the other? If I use both, what is the recommended order? Thanks! -me