I've used cPanel/WHM for yeaaaars, I understand SPF, etc. I just want to make sure I understand what, exactly, WHM does with the DKIM settings these days.
Specifically, for one, I just want to make sure that the cPanel side isn't relying on "Allow DKIM..." in WHM to be enabled to function. Aside from that, I'm wondering how effective and/or reliable DKIM has been, both from a spam-blocking perspective and from a not-blocking-legitimate-messages perspective.
Is it worth enabling these days?
So on the cPanel side, under Mail > Authentication, there's the Enable/Disable DKIM option. On its' own, what does this do, exactly? Does it block messages solely on this setting?
Then on the WHM side there is "Allow DKIM verification for incoming messages", which defaults to off, and if it's enabled you also have the option to "Reject DKIM failures".
Specifically, for one, I just want to make sure that the cPanel side isn't relying on "Allow DKIM..." in WHM to be enabled to function. Aside from that, I'm wondering how effective and/or reliable DKIM has been, both from a spam-blocking perspective and from a not-blocking-legitimate-messages perspective.
Is it worth enabling these days?