This is fork adds the ability to use multiple INWX accounts for DNS-01 validation on one certificate.

For general documentation, see the upstream documentation.

For each account, you'll need a file like this:

{
    "username": "<your INWX username here>",
    "password": "<your INWX password here>",
    "sharedSecret": "<TFA shared secret, optional>"
}

Repeat for each account you want to use

To configure which account should be used for which domain, create a file like this:

{
    "domainConfig": {
        "path to account json (see above)": ["list", "of", "domains"]
    }
}

Finally, when running lego, set the INWX_CONFIG env variable to the file created in Step 2 and set the flag --dns="inwx-multi"

Using absolute paths is recommended.