We moved our domain name to wordpress but want to keep email with register.com. Register.com provided the following DNS parameters to use, but this gets the error below. It appears that it wants 2 parameters for CNAME where register.com is only aware of one parameter. Register.com support has no idea what to put in the additional parameter.
1. CNAME records should be “CNAME <subdomain> <domain>”. No wildcards (*).