Johnathan Kulow

The following link outlines the changes I mentioned as described by Proofpoint, but it requires a login so I'll also attach a screenshot to read: Proofpoint's Response on CIDR Range 40.95.0.0/16 Giving Relay Deny errors

Here is the link to the Microsoft documentation.

Hi Sean Cusick 

On March 2, 2023, you mentioned this was on the 2023 roadmap. On December 1, 2023 you mentioned this feature was under development.

As of the first quarter of 2024 Microsoft has started a slow roll-out of some mail handling processes to ensure their IP's don't end up on blacklists due to open relays forwarding too much spam. This now affects the consistent delivery from  our internal support address relaying to our Zendesk support address to create tickets, and I'm sure we're not the only Zendesk customer having issues. We have SPF and DKIM setup properly but that's not the solution, and never should have been the solution to begin with, any longer. We NEED the ability to setup authenticated SMTP leveraging an o365 account in order to maintain brand consistency with our support.

Could you provide any sort of update? I saw reference that this type of functionality exists within Zendesk Sell, so it's not like the knowledge to implement the solution is missing from Zendesk's internal development team. We're just all curious why it's been 8 years since this thread was first opened expressing similar concerns to today, and still not having a solution in place to address things.

Thank you.