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Taen keren's avatar
Taen keren
Iron Contributor
Oct 14, 2019
Solved

Confused - need clarification

I've read this article regarding  Send mail from Multiple devices/application    Option 1 is the MS 'Recommended' one - but then there's this kind of "disclaimer" in the bottom:    "If you happen...
  • ChrisHoardMVP's avatar
    Oct 14, 2019
    Hi Taen keren,

    With SMTP services it is traditionally recommended to repurpose an old on premise Exchange (if in hybrid) or use a cloud server like Hyper V/Azure as it takes the load off of 365 and you have greater management (having access to IIS etc). These would then sit behind a smart host such as Mimecast to protect the domain (s) against blacklisting.

    In security terms both are secure whether you go through 365 or spin up a VM with IIS. Just make sure if itโ€™s the second option to lock down open relaying! Oh, forgot to add that the second option of the VM does have the benefit of permitting non-auth SMTP too whereas 365 does not - this is good for legacy devices and apps!

    Had much fun with this in the past as you can tell! ;D

    Hope that answers your question!

    Best, Chris

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