Vérificateur d'email

🔧 JavaScript/TypeScript

// Validation syntaxique basique
function isValidEmailFormat(email) {
  const regex = /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$/;
  return regex.test(email);
}

// Validation avancée avec vérifications DNS
async function validateEmail(email) {
  // 1. Validation syntaxique
  if (!isValidEmailFormat(email)) {
    return { valid: false, reason: 'Format invalide' };
  }
  
  const [user, domain] = email.split('@');
  
  // 2. Vérification domaine DNS
  try {
    const mxRecords = await dns.resolveMx(domain);
    if (mxRecords.length === 0) {
      return { valid: false, reason: 'Pas de serveur mail' };
    }
  } catch (error) {
    return { valid: false, reason: 'Domaine inexistant' };
  }
  
  // 3. Test SMTP (simulé)
  const smtpResult = await testSMTPConnection(domain, email);
  
  return {
    valid: smtpResult.valid,
    confidence: smtpResult.confidence,
    details: smtpResult.details
  };
}