Error: Failed to resolve target address , the address will be ignored, error: No such host is known (11001)

Products

• Client Management Suite
• IT Management Suite

Issue/Introduction

CEM agents cannot register with the Notification Server and the following errors are seen:

• Failed to build CEM gateway address list, CEM gateways info is not available
• Failed to connect to CEM gateway, error: The system cannot find the file specified (0x00000002)
• The resolvable target address '<FQDN>' from list '<FQDN>' was not available recently, the address will be ignored
• Failed to resolve target address '<Server Alternative Name>:443' from list '<Server Alternative Name>', the address will be ignored, error: No such host is known (11001)
• Failed to resolve outbound addresses '<FQDN>', error: No such host is known (11001)

Environment

ITMS 8.x

Cause

Priority of server names in the Notification Server's Communication Profile

Resolution

In the Notification Server's Communication Profile, there were 2 addresses for HTTPS Communication Hosts. One with the FQDN name and one with the DNS name (Server's Alternative name); after changing the priority and bringing the DNS name first, the issue is resolved.