Aria Operations failing to Send Scheduled Reports via Email

Products

• VMware Aria Suite

Issue/Introduction

• Scheduled reports are not sent from Aria Operations.
• We see the following entries in the analytics logs:
  2024-12-17T10:53:49,957+0000 ERROR [itask-thread-certificate-monitor-thread]  com.integrien.analytics.certificate_monitoring.OutboundPluginMonitoredResource.monitorAndAddToResult - ssl handshake with endpoint caused the error, plugin: {pluginType: StandardEmailPlugin, pluginId: plugin-uuid, pluginNameDrive Space alerts, }, error: Cannot get ssl certificate chain due to exception: Unsupported or unrecognized SSL message, 

  2024-12-17T10:55:38,941+0000 ERROR [itask-thread-certificate-monitor-thread]  com.integrien.analytics.certificate_monitoring.OutboundPluginMonitoredResource.monitorAndAddToResult - ssl handshake with endpoint caused the error, plugin: {pluginType: StandardEmailPlugin, pluginId: plugin-uuid, pluginNameCluster Capacity Report-Weekly, }, error: Cannot get ssl certificate chain due to exception: Connection timed out (Connection timed out), 

• Checking the port connectivity from Aria Operations node to SMTP server on port 25 fails.
  
  curl -v telnet://SMTP_FQDN: 25

  * Host SMTP_FQDN:25 was resolved.
* IPv6: (none)
* IPv4: ###.###.###.###
Trying ###.###.###.###:25 ...
* connect to ###.###.###.### port 25 from ###.###.###.### port 39068 failed: Connection
timed out
* Failed to connect to SMTP_FQDN port 25 after 129502 ms: Couldn't connect to server
* Closing connectio ncurl: (28) Failed to connect to SMTP_FQDN port 25 after 129502 ms: Couldn't connect to server

• Testing a send mail from the CLI also fails using the curl command: curl --ssl-reqd --url 'smtp://smtp_fqdn:25' --user 'username:pass' --mail-from 'your_email_here' --mail-rcpt 'recipient' --upload-file /tmp/mailbody.txt

• Performing a packet capture from Aria Operations to SMTP server will only show TCP retransmission after the initial request as we do not get any response from the SMTP server.
  

Environment

Aria Operations 8.x

Cause

Underlying network connectivity issue between the Aria Operations nodes and the SMTP server (or a Load Balancer if that is in use).

Resolution

Make sure that the connectivity between SMTP server and Aria Operations nodes is working correctly on port 25.

Additional Information

• If you have an Aria Operations cluster with multiple data nodes then make sure SMTP connection is successful on all nodes, else you may observer intermittent email delivery based on which node is triggering the email.
• Performing a Test email from the Aria Operations UI may also result in intermittent success as the request can be processed from any data node in the cluster and the success will depend on that node having connectivity to the SMTP server.