Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Delegated Access
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Glenn Maxwell
13,761
Reputation points
Hi All
we are using exchange 2016 hybrid environment, we create users in onprem and migrate to online. i have an external user ******@extdomain.com sending emails to our users.
i have user1 who has delegated his calendar access to user2 and user3.
When external user is sending calendar invites to user1@Company portal .com , user1 is getting calendar invites but user2 and user3 are not getting those delegated emails.
delegation settings on user1 is correct. the emails to user2 and user3 are held at our email gateway and i suspect due to spf. Are there any Microsoft ips which i need to whitelist on our email gateway for delegation.it is only happening for external users sending invites. for internal invites we don't see any issue.
Exchange Online
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
Exchange | Hybrid management
Exchange | Hybrid management
The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.
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Aholic Liang-MSFT 13,926 Reputation points Microsoft External Staff2022-09-30T07:58:00.17+00:00 Hi @Glenn Maxwell ,
Please have a check if the messages are sent to the junk email folder in the user2 and user3 mailboxes.
If not, please try sending normal mails to internal user from external to see if it's received.
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