Email to Sharepoint Site from Outlook for Mac 2016

Hernandez-Velez, Charlotte (NIH/NCI) [C] 1 Reputation point
2021-01-29T11:00:02.92+00:00

Windows Outlook users can email the Sharepoint site to deposit files. Mac Outlook users get undeliverable errors. No issues with Outlook OWA.

  • Checked the permissions, no issues
  • Verified the email address, no issues
  • Was able to send the email using Outlook OWA (no issues with attachment or message size)
  • Does Outlook for Mac 2016 support the stssync protocol needed?
  • Why does it not work? (technical explication if possible)

Undeliverable message from Sharepoint Server:
Remote Server returned '554 5.0.0 <[IP address] #5.0.0 smtp; 5.1.0 - Unknown address error 552-'5.3.4 Message
size exceeds fixed maximum message size' (delivery attempts: 0)>

Office for Mac 2016 version 16.45 (21011103)

SharePoint On Prem (SP2016)

We are using OWA as a workaround. Would like to know if emailing from Outlook for Mac 2016 to the Sharepoint is possible. If not possible, would like to know why (I have to notify the Sharepoint admins).

Thanks

C.H.V

Microsoft Office Online Server
Microsoft Office Online Server
Microsoft on-premises server product that runs Office Online. Previously known as Office Web Apps Server.
639 questions
Office Mac
Office Mac
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Mac: A family of Apple personal computers that run the macOS operating system.
502 questions
Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,226 questions
0 comments

1 answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. JeffYang-MSFT 6,241 Reputation points Microsoft Vendor
    2021-02-01T08:58:35.193+00:00

    Hi @Hernandez-Velez, Charlotte (NIH/NCI) [C] ,

    Welcome.

    I tried some research about your issue but have only found limited information yet. Just as this article mentioned, the stssync protocol is not supported on Mac. (Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

    The reason it works perfectly in Windows is because the ActiveX controls and stssync protocol that provide this feature are supported only in Windows and not on Mac's.

    Guess it might be related to the causes of your issue? I would try more tests and search about that. Any updates, I would post back here.

    If an Answer is helpful, please click "Accept Answer" and upvote it.
    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.