Article ID: 2784785 - View products that this article applies to.
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When you send email messages by using Microsoft Outlook in Office 365, you may experience one or both of the following issues:
Symptom 1: You receive non-delivery reports (NDRs)Email messages or meeting invitations are not delivered successfully. For example, you receive an NDR that resembles the following:
Generating server: <server name>.local
#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
Symptom 2: The AutoComplete feature in Outlook does not work as expectedWhen you create a new email message and then type a name in the To line, the user's name is auto-populated. However, when you double-click the name, you experience one of the following issues:
These issues may occur if one of the following conditions is true:
To resolve these issues, follow these steps:
This issue most frequently occurs when messages are migrated by using a method that does not correctly update the underlying X.500 distinguished name information for the original recipients of the message. The most common culprits in this scenario are .pst migrations.
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Article ID: 2784785 - Last Review: September 3, 2013 - Revision: 5.0