Is it possible to remove "sent via" in emails from VPS?

Question

Mail server

Hello, I rent a VPS and it has the main domain name. It has more domains, respectively, and when sending a letter from any domain, in the GMAIL client it says "Sent via: domain.com" Is it possible to somehow get rid of this signature. The VPS is running VESTACP.

Answer 1

This means that the emails you send do not have SPF/DKIM domain authorization from the From field, but have SPF or DKIM domain.com domain authorization.
It is necessary to:
1. Use the SMTP envelope address of the same domain that is used in the From email
2. Configure SPF for this domain
3. Sign DKIM emails with the DKIM domain (d=) matching the From domain.
To check these and other settings, you can use, for example, this service .