Hi Guys,
We're running Dynamics 365 v8.2.2.112 on-prem with server-side synchronization and we're experiencing the below error erratically.
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"The message was saved as a Microsoft Dynamics 365 email record, but not all the attachments could be saved with it. An attachment cannot be saved if it is blocked or if its file type is invalid."
We have 3 organizations running on one server. One organization is never affected. Two others experience this issue. It's affecting random emails with different types of attachments (pdf, xlsx etc) with different sizes at different times.
Double checked the file extension block list and attachment size (we set 31,072 KB) and email server profiles which are set the same as the organization without issues.
We haven't found a solution online. Any advice will be highly appreciated.
