Hi @luchris ,
Thanks for the reply.
I also have the same values in my main.cf :
![](https://community.mailcow.email/assets/files/2023-05-04/1683195395-468631-image.png)
I haven’t changed any config file.
Also I did a check on mxtoolbox.com and it says :
![](https://community.mailcow.email/assets/files/2023-05-04/1683195534-9689-image.png)
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