I just had an issue with my own email/website and one other clients,
Not sure what has happened but it seems that something has pointed my A and MX records to an old IP address where my email & website was being hosted some months ago, even though my records in Zoneedit had the correct info.
mxtoolbox showed it is at the old ip address I am using Zoneedit for all my records as mentioned above.
In the attachment Global DNS Propagation shows some countries as the current address where it is meant to be and about half the other countries show the old address.
I have just fixed this by changing my A record to a false zone and changing back again but would really love to know how the heck it happened!!!
thanks in advance