| Event Id | 1091 |
| Source | MSExchangeSRS |
| Description | The directory replication agent (DRA) attempted to open mail with name <recipient> but received error <error code>. Messages could not be sent. Make sure that the mail service on this Microsoft Exchange Server computer is running. |
| Event Information | The directory replication agent (DRA) is responsible for synchronizing with the other directories and accepting directory updates. Stop and restart the information store and Site Replication Services on the Exchange server. |
| Reference Links | Directory
Replication Fails with 1091 Error 2147746077 Intersite Directory Replication Stops with Event ID 1091 and Error 2147942414 Backout of Upgrade Causes Replication to Fail Replication or Knowledge Consistency Check Fails with Application Event ID 1091 |
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