# MailChecker  

## Requirement  
- swipl: SWI-Prolog version 9.2.3 for x86_64-linux  
- npm: 10.5.2  
- nodejs: v18.18.2  

## How to run it  
``` shell  
npm install
npm start
```
then visit localhost:3000

## Example input
```
google.com
renge.io
gmail.com
outlook.com
cs.stonybrook.edu
```

## Expected result
```
a:
[
    "1.1.1.1" //list of IPs the input domain pointed to
]
mx:
[
    //list of mx domain and priority that the domain points to
    {
        "exchange": "example.com",
        "priority": 10
    }
]
spf:
{
    "spf": "v=spf1 mx -all", //spf record of the domain
    "allowedIP4": [
        "1.1.1.1" //lists of ipv4 ips that is allowed to send email from this domain
    ],
    "allowedIP6": [
        "2001:4860:4000::/36" //lists of ipv6 ips that is allowed to send email from this domain
    ]
}
```