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Parse and evaluate DMARC email authentication policy

Project description

DMARC (Domain-based Message Authentication, Reporting & Conformance)

This module allows an application to parse and evaluate email authentication policy, to application supplied TXT RR, SPF and DKIM results.

Installation

Use the package manager pip to install dmarc.

pip install dmarc

Usage

>>> import dmarc

# represent verified SPF and DKIM status
>>> aspf = dmarc.SPF(domain='news.example.com', result=dmarc.SPF_PASS)

>>> adkim = dmarc.DKIM(domain='example.com', result=dmarc.DKIM_PASS)

>>> d = dmarc.DMARC()

# parse policy TXT RR
>>> p = d.parse_record(record='v=DMARC1; p=reject;', domain='example.com')

# evaluate policy
>>> r = d.get_result(p, spf=aspf, dkim=adkim)

# check result
>>> r.result == dmarc.POLICY_PASS
True

# check disposition
>>> r.disposition == dmarc.POLICY_DIS_NONE
True

>>> r.as_dict()
{'record': {'identifiers': {'header_from': 'example.com'}, 'auth_results': {'dkim': {'domain': 'example.com', 'result': 'pass'}, 'spf': {'domain': 'news.example.com', 'result': 'pass'}}, 'row': {'count': 1, 'policy_evaluated': {'spf': 'pass', 'dkim': 'pass', 'disposition': 'none'}}}, 'policy_published': {'adkim': 'r', 'domain': 'example.com', 'aspf': 'r', 'pct': 100, 'p': 'reject'}}

License

MIT

Project details


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