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:To Demonstrate the point in the statement above:
:Find the MX record for senecacollege.ca using the '''dig''' command:<br><source lang="bash">dig senecacollege.ca MX</source>
:Notice that the email servers aren't even a subdomain of senecacollege.ca but a completely different company (Microsoft in this case).<br>In other cases (for example check the records for ''google.com'') the email servers are within the company's domain.