Sender Aborted Connection caused by Directory Authentication errors

Products

• Messaging Gateway

Issue/Introduction

Inbound messages are failing with the error "sender aborted connection". When checking DDS logs, you see:

Attempt to authenticate to data source failed

Cause

This indicates that SMG is unable to authenticate with Active Directory. When authentication fails, message processing stops, causing inbound connections to abort.

Resolution

You need to ensure SMG can successfully authenticate to Active Directory.

1. Go to
   Administration > Settings > Directory Integration

2. Test the connection to your directory source.

3. Update credentials, network access, or LDAP/LDAPS settings as needed until the test succeeds.