I have just learned that, beginning in 3 days, my employees will no longer be able to receive their work email. Apparently Google is dropping support for Gmail accounts being able to fetch mail from outside accounts. At all. And they announced this change less than 60 days ago. (The announcement was in the basement, stairs, leopard, etc.) What I want to accomplish is simple: When email ...
The forwarding he’s talking about isn’t the same as you hitting forward in your mail client.
SPF only authenticates the first hop from the origin MTA. If you put a relay server in then you either need to disable SPF checking on subsequent MTAs or implement RFC8617. If you don’t then when subsequent MTAs check the original sender’s SPF it will fail because the message came from your relay.
It’s not his SPF record.
The forwarding he’s talking about isn’t the same as you hitting forward in your mail client.
SPF only authenticates the first hop from the origin MTA. If you put a relay server in then you either need to disable SPF checking on subsequent MTAs or implement RFC8617. If you don’t then when subsequent MTAs check the original sender’s SPF it will fail because the message came from your relay.