No reception of Gmail emails to my domain

Help with Unusual Circumstances
1

I recently changed my domain’s nameservers from my server to those of my registrar (OVH). I only have one issue: emails coming from Gmail are not making any delivery attempts at all (no connection shown in Postfix) to addresses on my domain. However, I can successfully send emails from my domain to Gmail.

I’m a bit stuck. My DNS zone configuration looks clean, and this issue only happens with Gmail. I can provide more information if needed.

I have also opened a support ticket with OVH regarding the opening of port 25 on their side, since the traffic is not even reaching my server.

2

If port 25 is not open, you won’t receive rmail. So first have that fixed, tben retry.

3

Yes, I am going to wait for OVH answer, i will come back here later, 25 is still open on my vm, and open through Edge ovh firewall.

This suggests that there is still a layer managed by OVH for handling this port.