Hi eris and thank you very much for your quick reply.
Just for your reference, this request is because my hosting IP (the whole subnet) was already blacklisted in one famous list.
I correctly setup SPF, DKIM, DMARC and rDNS, in fact I don’t have email deliverability issues, they don’t go to spam.
I tried to contact the list telling the truth, that the email server is being used by myself only with few automatic emails per day (only for signup, password resets etc) for my small community. They saw everything correct but requested that the FQDN pointed by the rDNS IP displays some abuse information etc etc.
I find this “crazy” also because abuse contacts etc are already displayed in the whois information.
That’s why my request here. I acknowledge that right now it is not possible, eventually if this “strategy” is being implemented by many other lists can this become a new feature of HestiaCP?