My IP is on the blacklist for 2 months now, there are LINKS that are NOT on my server and they send SPAM, I asked OVH for support and the only thing they told me is that I need to configure OPEN RELAY. They do not do it, and I do not do it.
What I want to do is that only people who use MY SERVER (hosting) can send emails, IF NOT on my server they can not send anything and there may be something like a firewall or something like that, apparently the OPEN RELAY does that, that NO ONE SENDS CORREOS if they ARE NOT REGISTERED IN MY SERVER.
Can you help me set OPEN RELAY please?
What I want to do is that only people who use MY SERVER (hosting) can send emails, IF NOT on my server they can not send anything and there may be something like a firewall or something like that, apparently the OPEN RELAY does that, that NO ONE SENDS CORREOS if they ARE NOT REGISTERED IN MY SERVER.
Can you help me set OPEN RELAY please?