#!/usr/bin/env python3
"""
Email Deliverability Report Generator
Comprehensive analysis of email authentication
"""
import dns.resolver

def check_spf(domain):
    """Check SPF record"""
    try:
        records = dns.resolver.resolve(domain, 'TXT')
        for r in records:
            txt = ''.join([s.decode() for s in r.strings])
            if txt.startswith('v=spf1'):
                return {'status': 'PASS', 'record': txt}
        return {'status': 'FAIL', 'error': 'No SPF record'}
    except Exception as e:
        return {'status': 'ERROR', 'error': str(e)}

def check_dmarc(domain):
    """Check DMARC record"""
    try:
        records = dns.resolver.resolve(f'_dmarc.{domain}', 'TXT')
        for r in records:
            txt = ''.join([s.decode() for s in r.strings])
            if txt.startswith('v=DMARC1'):
                return {'status': 'PASS', 'record': txt}
        return {'status': 'FAIL', 'error': 'No DMARC record'}
    except Exception as e:
        return {'status': 'ERROR', 'error': str(e)}

def check_mx(domain):
    """Check MX records"""
    try:
        records = dns.resolver.resolve(domain, 'MX')
        mx_list = [(r.preference, str(r.exchange)) for r in records]
        return {'status': 'PASS', 'records': mx_list}
    except Exception as e:
        return {'status': 'FAIL', 'error': str(e)}

def generate_report(domain):
    """Generate full deliverability report"""
    return {
        'domain': domain,
        'spf': check_spf(domain),
        'dmarc': check_dmarc(domain),
        'mx': check_mx(domain)
    }

if __name__ == '__main__':
    domain = input('Enter domain: ')
    report = generate_report(domain)
    print(f"SPF: {report['spf']['status']}")
    print(f"DMARC: {report['dmarc']['status']}")
    print(f"MX: {report['mx']['status']}")