It seems Sonic is currently using SPF but not DKIM for outgoing mail from the sonic.net domain. This is causing mail forwarded from a group alias to be rejected by Gmail. SPF checks fail as expected, but DKIM would pass and Google would accept the messages. I can provide more details on that if needed, but here is a good reference from Google https://support.google.com/a/answer/175365?hl=en
So my feature request is simply that Sonic add DKIM signatures to its outgoing customer messages, like all the other major ISPs do. Thanks,
So my feature request is simply that Sonic add DKIM signatures to its outgoing customer messages, like all the other major ISPs do. Thanks,