Remote MX consists of the following:
Disabling local email is desirable when the InterWorx server is not responsible for managing email. This is usually used in conjunction with the custom MX records, but can be used independently to simply disable email delivery for a domain.
To disable local delivery:
To use an outside email server, such as Google Docs, you need to modify your MX records. This is possible in SiteWorx.
To edit MX Records:
If local mail delivery is still enabled, providing custom MX records will not be completely effective. Mail originating from this server will be delivered locally, not to the actual MX record. You must disable local delivery to have a full implementation of external MX Records.