Appian Cloud: Outbound Emails Get Blocked Intermittently When Our Shared Appian Mail Server IPs Get Added to Outlook Block List

Certified Senior Developer

Hi Appian Community,

Any cloud customers experienced this issue?

Our clients report not receiving our outbound emails that have been custom configured already in the Sender field (i.e. not Process, Process Designer, Process Model, or Process Initiator that will create different sender names) but a custom and consistent sender name.

We have verified that the DNS in the SPF records contain all of our Appian site names.

We also enabled DKIM to contain a verified email signature.

However, whenever our shared Appian mail server IPs get added to the Outlook/Microsoft global block list, our outbound emails get blocked.

Any resolution that anybody implemented to get around this issue?

Thanks in advance.

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