On Wed, Apr 15, 2020 at 10:55:25PM +0200, Rhialto wrote: [Google "Mail"]
> They demand DKIM or similar configurations, which I refuse to use, > because its a lot of work to configure, and it often doesn't even work > with mail forwarding. It might help to have a PTR record for the smtp clients' outgoing address; last time I had that problem with Google it had gone lost when switching nameserver machines and the backup wasn't up-to-date. However, SPF seems to work to pacify Google and isn't very difficult to setup. -is