The forums I maintain at users.rust-lang.org and internals.rust-lang.org are set up to use the firstname.lastname@example.org and email@example.com emails respectively for reply-by-email and ‘email in’ is checked. When I send an email to either of those addresses though I get the following response:
We're sorry, but your email message to ["firstname.lastname@example.org"] (titled new topic test) didn't work. None of the destination addresses are recognized. Please make sure that the site address is in the To: line (not Cc: or Bcc:), and that you are sending to the correct email address provided by staff.
What am I missing?