For several years I have been able to receive email using my domain,
dan@stahlke.org. I haven't changed any settings. It is configured as follows:
stahlke.org. 3600 IN MX 20 mx2.zohomail.com.
stahlke.org. 3600 IN MX 10 mx.zohomail.com.
Starting some time last night or this morning, I am no longer receiving any email sent to
dan@stahlke.org. I can still send and receive mail sent to
dstahlke@zoho.com.