There are only the two entries pointing to the name server on my registrar GoDaddy:
ns1.x10hosting.com
ns2.x10hosting.com
Traditionally I've had entries provided by the webhost I could manually add in DNS for the MX record on the registrar. I've looked around X10 without any luck. I also deleted my e-mail and recreated hoping to find the MX entries to add to the registrar.
This seems to be a common issue without resolution & will point out once more that I could previously send and receive e-mail but without any changes on my part have quit receiving e-mails. The pointed link earlier in the thread relates to a comment by
@Anna who thought several accounts were randomly effected by perhaps the same issue. I've setup e-mail on other webhosts before and this, for whatever reason, has me completely confused.