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In the left column, click to select a site. Select Sharing. Under Default sharing link type, clear the Same as organization-level setting checkbox. Choose the default sharing link setting that you want to use for this site, and then select Save.
The change to SharePoint will no longer spoof the email address for such messages. These messages will have the same display name (such as the person who is doing the sharing), but will always use [email protected] as the From address. Message sharing if the user does not have an Exchange Online mailbox.
Is SharePoint Online Spam?
A new SharePoint phishing scam has been detected which attempts to steal Office 365 credentials from business users. those credentials are subsequently used to gain access to sensitive company information stored in the cloud and email accounts which can be used in phishing and business email compromise attacks.
This article discusses changes that affect the From address that’s used to send notification email messages by SharePoint in Microsoft 365. Starting in January 2016, there was a subtle change in the “From” email address that’s used in notification messages that are sent by SharePoint in Microsoft 365.
Outgoing Email Address: Specifies the new outgoing e-mail address for e-mail messages sent from this Web application. The type must be a valid address; for example, noreply @krossfarm.com
What’s the new email address for SharePoint notifications?
Because of this change, SharePoint in Microsoft 365 will no longer honor the setting Email Notifications for newsfeed notifications that is found in the SharePoint Admin Center. The notification email messages from newsfeeds will always use the [email protected] as the From address. This setting will be removed in a future release.
In SharePoint 2016, When we share a document with other users, SharePoint send the sharing email to the users with the link of the item. In that email, from address is the user’s own address ( which shared the document) and to address is end user’s address.