After many years of being able to send to my jervisbaydivers.org address from yahoo, and being able to send from jervisbaydivers.org to about 5 club members with yahoo email addresses, I am now unable to send in either direction.
If I try and compose a message to a jervisbaydivers.org email address, it won't let me send it, saying it looks like spam. If I try and send from jervisbaydivers.org to my yahoo account, it gets bounced saying " 554
Message not allowed - [PH01] Email not accepted for policy reasons.".

I am unable to contact a person or get any help with this, and the url listed in the bounce message doesn't address the problem.