On 12/15/2016 10:01 AM, L.P.H. van Belle wrote: ... > I looks to me and incorrect implementation, what do you guys think. ...
All this is allowed, legal, and unsurprising. Not everything that is allowed is wise. Ideally, each host (or each connection on a multi-homed host) should have its own unique hostname/A/PTR/HELO for mail, with higher lever MX records listing all of them. If this is not your server, there is nothing to complain about. If their HELO name really has a trailing space, that would be a config error. But config errors on HELO names are not unusual. -- Noel Jones
