I have a self-hosted wordpress.org site connected to jetpack. I have tested several other features such as the stats and the contact form, but the post by email has been puzzling. When I send email to the 'secret address' from a domain email (pack747.net), it never gets posted. However, if I send an email from google or even a .edu account, it shows up immediately as a post. So, it's as if the domain email addresses are being placed in a spam filter of some kind, but I don't know where/how to fix this issue. Any ideas?