> A quick look at Talos Intelligence reports a 1600% increase in email from your domain over the last day; email reputation os 'neutral' at this time. Not good, not bad, but neutral.
> Also you're on OVH, about which a quick look through the list's archives will possibly prove instructive. It's reasonably likely (as likely as not) that you're running on an IP in a neighbourhood with some poor neighbours.
> As Mathieu pointed out in his second email, building a good reputation takes time. Losing a good reputation is a matter of rather less time and can be influenced by factors outside of your control.
The rest of that reply chain is the usual debate:
OP. My domain's emails are marked as spam by Gmail
REPLY. Their system, their rules
OP. I don't accept that
Repeat ad nauseam.