# Help and Support

> Links to further documentation and communication channels

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Site [llms.txt](/llms.txt)

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## Documentation

- OpenStack-Documentation: https://docs.openstack.org/

## Support

- Mattermost: https://mattermost.uni-muenster.de/wwu/channels/openstack (Team CIT, Kanal OpenStack)
- E-Mail: openstack@uni-muenster.de

If your request involves granting administrative permissions or any other sensitive information or workflows, please note, that we require your email to be digitally signed, so we can ensure your identity. If you do not have a personal certificate yet, you will find instructions on how to request and use one [here](https://www.uni-muenster.de/CA/de/howto-mail.shtml). If **Outlook** is your mail client of choice, note, that the default `SHA1` hashing algorithm is considered **insecure** by modern cryptographic libraries, and will therefore be rejected by our ticket system (as well as most other email clients). Search for the keywords `Hashalgorithmus` / `hash algorithm` in [these instructions](https://www.uni-muenster.de/CA/en/howto-setup-exchange.shtml), to find step by step instructions on how to correct this.