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titleExchange Attributes
Info

Exchange attributes are attributes in the Exchange Server schema provided by Microsoft.

Note

Exchange attributes are cleared when a mailbox is deprovisioned and should only store information for use by Microsoft 365 services.

Name

Owner

Source

Details

extensionAttribute1

Mail Team

Office 365 (if mailbox provisioned)

Vanity domain; used by some recipient filters

extensionAttribute2

Mail Team

extensionAttribute3

Mail Team

extensionAttribute4

Mail Team

extensionAttribute5

Mail Team

Azure AD Connect

Override attribute for IID built by Azure AD Connect; AADC sets attribute in Azure to: sAMAccountName + "@eid@eid.utexas.edu"

extensionAttribute6

Mail Team

extensionAttribute7

Mail Team

extensionAttribute8

Mail Team

extensionAttribute9

Mail Team

extensionAttribute10

Mail Team

extensionAttribute11

Mail Team

extensionAttribute12

Mail Team

extensionAttribute13

Mail Team

extensionAttribute14

Mail Team

extensionAttribute15

Mail Team

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