Forum Notification Emails Issue

[mkel2010]

For some reason, Gmail sends the forum post notification emails directly to spam - even though I have the return address in my contacts list. This is the message that I get from Gmail about each message:

"The sender hasn't authenticated this message so Gmail can't verify that it actually came from them"

Gmail suggests the following to avoid the issue:

Best practices for email authentication

We recommend you always set up these email authentication methods for your domain:

• SPF lets servers verify that messages appearing to come from a particular domain are sent from servers authorized by the domain owner.
• DKIM adds a digital signature to every message. This lets receiving servers verify that messages aren't forged, and weren't changed during transit.
• DMARC enforces SPF and DKIM authentication, and lets admins get reports about message authentication and delivery.

[BIGNEWY]

I will let the team know thank you