On 10/06/13 03:00, Viktor Dukhovni wrote:
On Mon, Jun 10, 2013 at 01:17:19AM +1000, Nikolas Kallis wrote:
Is using 'reject_non_fqdn_helo_hostname' and
'reject_invalid_helo_hostname' even neccessary when using
'reject_unknown_helo_hostname'?
You seem to have decided that the client HELO name is a silver
bullet against spam and the evils of RFC non-conformance.
Your wrong.
it is neither safe to use (too much legitimate email rejected) nor very
effective.
Of course it is safe. It will only reject host names that don't exist
and or don't have a DNS A or MX record. RFC 2821 requires these things.
If a client is not meeting these requirements, then their e-mail server
is not configured correctly and I don't want to deal with it.
Thanks for the advice anyhow.
