[SOLVED] Setup cannot detect an SMTP or Send connector with an address space of ‘*’. Mail flow to the Internet may not work properly.”.

During an Exchange Server 2016 installation, you may get the following error:

Setup cannot detect an SMTP or Send connector with an address space of '*'.
Mail flow to the Internet may not work properly.".

Solution:

This is just a warning and you can simply ignore it.

 

 

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