Hi @luchris ,
Thanks for the reply.
I also have the same values in my main.cf :
I haven’t changed any config file.
Also I did a check on mxtoolbox.com and it says :
I see that some emails are received from public IPs, but some are coming from the same internal (I believe) IPv6 : fd4d:6169:6c63:6f77::1, which is the origin IP for both legit emails and the relayed ones