Confuse with configuration file

[hughwangmail]

I am confused with your configuration file:
here is your example:

{
    "sending domains": {
        "mydomain.com": {
            "yahoo.com": "a",
            "google.com": "txt",
            "apple.com": "txt",
            "reddit.com": "txt"
        },
        "myseconddomain.com": {
            "cisco.com": "a",
            "oculus.com": "a"
        }
    },
    "resolvers": [
        "8.8.8.8",
        "8.8.4.4"
    ],
    "email": {
        "to": "[email protected]",
        "from": "[email protected]",
        "subject": "[Change Detected] SPF Records for {zone} have changed.",
        "server": "email_server"
    },
    "output": "sums.json"
}

Here is my configuration without problem

{
    "sending domains": {
        "mydomain.com": {
            "mydomain.com": "txt"
        }
    },
    "resolvers": [
        "8.8.8.8"
    ],
    "email": {
        "to": "[email protected]",
        "from": "[email protected]",
        "subject": "[Change Detected] SPF Records for {zone} have changed.",
        "server": "localhost"
    },
    "output": "sums.json"
}

In my understanding,
"sending domains" is target domain to monitor.
But, what is the function of "myseconddomain.com"?

[cetanu]

sending domains allows for multiple, for circumstances where multiple zones/SPF records need to be maintained.

[hughwangmail]

Uhhh, Ok got it. However, the "myseconddomain.com" only support A record. If I change "a" to "txt" under "myseconddomain.com", it will pop up an error:
ValueError: too many values to unpack (expected 2)