SMTP Outbound Connection Test Validation Failed with Error "Email test error: Unknown SMTP host <SMTP_Server_FDQN_IP>"

Products

• VMware Aria Suite

Issue/Introduction

• While validating the connection of the standard email plugin, you might encounter an error indicating: Email test error: Unknown SMTP host <SMTP_Server_FDQN_IP>
  
  
  
  
• Upon testing the connection with the Standard Email Plugin, you might observe the following errors in the log files: /storage/vcops/log/vcops-bridge.log
  
  ERROR [ServerConnection on port 10000 Thread 62117] com.vmware.vcops.bridge.server.BridgeTracerAspect.processBridgeResult - Email test error: [Unknown SMTP host: <SMTP_Server_FDQN_IP>].
ERROR [ServerConnection on port 10000 Thread 62117] com.vmware.vcops.bridge.server.BridgeTracerAspect.processBridgeResult - SessionId: N/A; UserId: N/A; UserName: null.

Environment

Aria operations 8.X

Cause

• The issue is caused by the inability to perform DNS resolution for the <SMTP_Server_FQDN_IP>
• You can test the SMTP server by using nslookup, ping, or curl from Aria Operations.
  
     1. Running nslookup <SMTP_Server_FQDN> results in: Server can't find <SMTP_Server_FQDN_IP> SERVFAIL.
     2. Running ping <SMTP_Server_FQDN> returns: Temporary failure in name resolution.
     3. Running curl -v https://<SMTP_Server_FQDN>:<portnumber> results in: Could not resolve host: <SMTP_Server_FQDN>.

Resolution

• To fix the issue:
  
     Make sure the DNS server settings are properly configured and that the system can successfully resolve the <SMTP_Server_FQDN_IP>. Once the DNS issues are resolved, try running the SMTP Outbound Connection Test Validation again.