Thank you for looking into that. What you're saying pretty much lines up with what I'm suspecting based on the fact that in the OP Denise says they're working on a solution of some sort. Given that I know her and Mark would likely take into account and/or rule out every option before acting (something I definitely admire about them and about how they run DW) it makes sense that SPF would be an issue based on the sending and forwarding issues it would cause, as it seems they want users to keep having the option to use @dreamwidth.org available.