How to exchange server name for hcl mail outlook?

How to exchange server name for hcl mail outlook?

Dear listen to me,

HCL.com and Mail Outlook are two different websites. They do not follow a labelling structure to look like two kid websites on a mother or father or neither a kid or mother or father sector.

In this situation, assuming that both are two different websites, both will also be two different return companies. So mail would not circulate just like between these two websites before any further settings are done.

Thanks.