Office add-in for Outlook - Sometimes the sender's email address becomes LegacyExchangeDN.

Kenta Hayashi 1

Hello.

I am currently developing an Office add-in for Outlook.

When I use the following method to get the sender's email address, in rare cases, the emailAddress property becomes the value of LegacyExchangeDN instead of the email address.
office.from

The following is an example of an object when it becomes a LegacyExchangeDN (some parts are hidden).

{displayName: "XXXXXXXX", emailAddress:"/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (XXXXXXXXXXXXXXXX)/CN=RECIPIENTS/CN=XXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX-XXXXXX"}

We do not know the conditions under which this happens.

Can you please tell me the cause of this problem and how to solve it?

We're using Office 365(Microsoft 365).

Jade Liang-MSFT 9,976 Reputation points Microsoft Employee

2021-01-15T08:09:08.45+00:00

Hi @Kenta Hayashi ,
Considering your issue may be more related to the development of Outlook add-ins, please kindly understand we mainly focus on general issue on Outlook desktop client in Outlook forum, so I removed the Outlook tag, thanks for your understanding and hope your issue would be resolved soon.

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Office add-in for Outlook - Sometimes the sender's email address becomes LegacyExchangeDN.