A Python module and command line parser for SPF and DMARC records
Project description
A Python module and command line utility for validating SPF and DMARC DNS records
usage: checkdmarc [-h] [-d] [-f FORMAT] [-o OUTPUT]
[-n NAMESERVER [NAMESERVER ...]] [-t TIMEOUT] [-v]
[-w WAIT]
domain [domain ...]
Validates and parses SPF amd DMARC DNS records
positional arguments:
domain one or ore domains, or a single path to a file
containing a list of domains
optional arguments:
-h, --help show this help message and exit
-d, --descriptions include descriptions of DMARC tags in the JSON output
-f FORMAT, --format FORMAT
specify JSON or CSV output format
-o OUTPUT, --output OUTPUT
output to a file path rather than printing to the
screen
-n NAMESERVER [NAMESERVER ...], --nameserver NAMESERVER [NAMESERVER ...]
nameservers to query
-t TIMEOUT, --timeout TIMEOUT
number of seconds to wait for an answer from DNS
(default 6.0)
-v, --version show program's version number and exit
-w WAIT, --wait WAIT number os seconds to wait between processing domains
(default 0.0)
$ checkdmarc fbi.gov{
"domain": "fbi.gov",
"base_domain": "fbi.gov",
"mx": {
"hosts": [
{
"preference": 10,
"hostname": "mx-east.fbi.gov",
"addresses": [
"153.31.160.5"
]
}
],
"warnings": []
},
"spf": {
"record": "v=spf1 +mx ip4:153.31.0.0/16 -all",
"valid": true,
"dns_lookups": 1,
"warnings": [],
"parsed": {
"pass": [
{
"value": "mx-east.fbi.gov",
"mechanism": "mx"
},
{
"value": "153.31.0.0/16",
"mechanism": "ip4"
}
],
"neutral": [],
"softfail": [],
"fail": [],
"include": [],
"redirect": null,
"exp": null,
"all": "fail"
}
},
"dmarc": {
"record": "v=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:dmarc-feedback@fbi.gov; ruf=mailto:dmarc-feedback@fbi.gov; pct=100",
"valid": true,
"location": "fbi.gov",
"warnings": [],
"tags": {
"v": {
"value": "DMARC1",
"explicit": true
},
"p": {
"value": "reject",
"explicit": true
},
"adkim": {
"value": "r",
"explicit": true
},
"aspf": {
"value": "r",
"explicit": true
},
"rua": {
"value": [
{
"scheme": "mailto",
"address": "dmarc-feedback@fbi.gov",
"size_limit": null
}
],
"explicit": true
},
"ruf": {
"value": [
{
"scheme": "mailto",
"address": "dmarc-feedback@fbi.gov",
"size_limit": null
}
],
"explicit": true
},
"pct": {
"value": 100,
"explicit": true
},
"fo": {
"value": [
"0"
],
"explicit": false
},
"rf": {
"value": [
"afrf"
],
"explicit": false
},
"ri": {
"value": 86400,
"explicit": false
},
"sp": {
"value": "reject",
"explicit": false
}
}
}
}Installation
checkdmarc requires Python 3.
On Debian or Ubuntu systems, run:
$ sudo apt-get install python3-pipPython 3 installers for Windows and macOS can be found at https://www.python.org/downloads/
To install or upgrade to the latest stable release of checkdmarc on macOS or Linux, run
$ sudo -H pip3 install -U checkdmarcOr, install the latest development release directly from GitHub:
$ sudo -H pip3 install -U git+https://github.com/domainaware/checkdmarc.gitDocumentation
Bug reports
Please report bugs on the GitHub issue tracker
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