I've been told that the Xtra.co.nz domain is currently Blacklisted for emails so I am unable to receive emails from any senders from that domain to my Yahoo Small Business Email account. This seems the case for receiving into other Yahoo.com email addresses from Xtra emails also.
Here is the link that Yahoo Small Business email gave me to show xtra.co.nz Blacklisted for emails - https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3axtra.co.nz&run=toolpage Yahoo Small Biz told me to contact the domain provider (Spark) but as a an hour plus wait time for customer service not possible right now.
This email delivery issue from xtra.co.nz emails has been an on and off issue but now a big problem as both personal and work emails form xtra.co.nz domain not being received for much of the last two weeks. Emails from xtra.co.nz to Gmail and Outlook.com seem to work fine so somewhat isolated to receiving into Yahoo based emails and their related Yahoo small Business domains (me). I'm aware of issues with xtra.co.nz emails but many people still using so need to be able to get their emails.
What does Spark need to do to get this fixed? Any advice appreciated.