Hi, I’m receiving the error below whenever I try to open/edit office documents
net::canonicalHostName(CLIENT IP ADDRESS NOT SERVER) failed: Host not found: CLIENT IP ADDRESS NOT SERVER| wsd/ClientRequestDispatcher.cpp:470
My docker run command:
docker run -t -d -p 127.0.0.1:9980:9980 \ -e ‘aliasgroup1=https://nextclouddomain.com:443’ --restart always \ --cap-add MKNOD \ collabora/code
Nextcloud dashboard can connect and green light my collabora office server
Collabora Online server is reachable.
Collabora Online Development Edition 24.04.3.1 594b605
URL used by the browser: https://collaboraserver.com
Nextcloud URL used by Collabora: https://nextclouddomain.com (Determined from the browser URL)
Tex
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Hey @fuzunspm. Welcome to the forum + thanks for the question. 
Could we get some basic info too, like:
- What Collabora version?
- What OS + version?
- What Nextcloud + richdocuments version?
How did you set this up? What instructions were you following? Was it working before, and broke recently?
Hmmm… Looking in that exact Github file + linenumber, there is this comment about the error:
// We can't find out the hostname, and it already failed the IP check
Hmmm, so something is definitely not communicating right in your Nextcloud<->Collabora.
Side Note: Did you also see the fantastic:
They have some debugging steps in there too, and from a quick scan, looks like a few things about “hostname” problems too.
Hello @fuzunspm,
Sorry to hear about the problem you’re facing.
To understand more about your issue, could you provide a bit more information about your Docker configuration? Do you have an XML file?
Additionally, we have a similar discussion related to server issues that you might find helpful: https://forum.collaboraonline.com/t/convert-working-command-line-docker-to-compose-yml/1681/2