Send Microsoft Teams Notification with a proxy - Error: Unable to send the Message. Network is unreachable

[mhollstein]

Description

Unable to send test notification to MSTeams behind a proxy

Steps To Reproduce

1. Install Graylog (between Graylog and the Microsoft webhook is a proxy)
2. create test notification
3. insert webhook url for MSTeams
4. click on button "Execute Test Notification

Environment (Docker)

• Graylog Version: graylog:5.0.12
• OpenSearch Version: elasticsearch-oss:7.10.2
• MongoDB Version: mongodb:5.0.12
• Browser Version: Chrome Version 118.0.5993.89 (Offizieller Build) (64-Bit)

[sanket-kalpande]

I am also facing same issue, is there any solution

[mhollstein]

I found out that I had to set the proxy for Graylog. Then the sending to MS-Teams works in Graylog 5.2

You can set environment variables for this. In a systemctl service file it looks like this:

-e GRAYLOG_HTTP_PROXY_URI=http://your-proxy:your-proxy-port \
-e GRAYLOG_HTTP_NON_PROXY_HOSTS=your-opensearch-server.your-domain,127.0.0.1,localhost \

[mhollstein]

If you get this message:
Error:
Unable to send the Message. timeout

Try to delete the "Custom Message (optional)" and use a simple string like "Test"