Re: non_fqdn vs invalid helo hostname

2020-09-24 Thread Markus E.
On Thu, 24 Sep 2020, Bill Cole wrote: reject_non_fqdn_helo_hostname reject_invalid_helo_hostname Is there a good reason to use both checks? What is your risk tolerance? Mine is high, so I use both. Sounds good to me as well :) reject_invalid_helo_hostname is generally safe. I've never

Re: non_fqdn vs invalid helo hostname

2020-09-24 Thread Bill Cole
On 24 Sep 2020, at 5:49, Markus E. wrote: 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

non_fqdn vs invalid helo hostname

2020-09-24 Thread Markus E.
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 t