I want Office 365 mail box event in my SharePoint list

I'm referring this Question but guy said it's not possible,but SharePoint and Office 365 is connected with each other so I think it may be possible, If you have any suggestion I would be really appreciate

Tried Solution:

I tried to overlay from Exchange

Overlay calendar

In them I give it two links as follow

Outlook Web Access URL: https://outlook.office365.com/owa/

Exchange Web Service URL: https://outlook.myexchange.com

but It gives error "Could not establish trust relationship for the SSL/TLS secure channel with authority 'outlook.myexchange.com'. (e82daf9d-20d7-3000-bf7a-e3ebb1a7f673)"

It display look like

SSL error in calendar overlay

but how can I overcome this certificate error in office 365? OR suggest any other way to short out


3 Answers 3


It depends on the type of license purchased. If you purchase one of the "P" plans (targeted at the SMB space, scoped to less than 50 total users), there is no SSL available for SharePoint Online sites. If you purchase an "E" SKU for enterprises, SharePoint Online sites are SSL encrypted. As far as I know, all Exchange Online and Lync Online traffic is encrypted for all licenses.

Pingback from https://social.technet.microsoft.com/Forums/msonline/en-US/ed888f06-7a95-4155-bee1-36ecb13dcb66/does-office-365-support-ssl?forum=onlineservicesexchange


This issue occurs because SharePoint have their own certificate store that misses the certificate chain for the Exchange server.

Follow this article to add the trust https://blogs.technet.microsoft.com/ptsblog/2011/05/31/sharepoint-and-exchange-calendar-together/

  • I follow mention URL but,my site is in office 365 , so how can we create certificate or any IIS access ..?@Monica Oct 20, 2016 at 6:49

SharePoint Online Doesn't support Calendar overlay with Exchange web service

here microsoft mention on which version of sharepoint applies overlay In that list "SharePoint Online" is not there

and I have talked with microsoft person to raising the issue in Office 365,Hw also talled me the same

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