I’m trying to set up Nodemailer to send emails through the mail.com SMTP server, but I’m encountering the following error:

Error: AC650000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:c:wsdepsopensslopensslsslrecordssl3_record.c:355:
{
 library: 'SSL routines',
 reason: 'wrong version number',
 code: 'ESOCKET',
 command: 'CONN'
}

Here is my current Nodemailer configuration:

import nodemailer from 'nodemailer';
import dotenv from 'dotenv';
import path from 'path';

// Load environment variables from .env file
dotenv.config({ path: path.resolve('.env') });

console.log('EMAIL_USERNAME:', process.env.EMAIL_USERNAME);
console.log('EMAIL_PASSWORD:', process.env.EMAIL_PASSWORD);

// Create a Nodemailer transporter using SMTP with mail.com
const transporter = nodemailer.createTransport({
  host: 'smtp.mail.com',
  port: 587, // Use 587 for STARTTLS
  secure: false, // Use false for STARTTLS
  auth: {
    user: process.env.EMAIL_USERNAME,
    pass: process.env.EMAIL_PASSWORD,
  },
  tls: {
    rejectUnauthorized: false, // Allow self-signed certificates if necessary
  },
});

export const requestPasswordReset = async (req, res) => {
  const { email } = req.body;

  try {
    const user = await User.findOne({ email });
    if (!user) {
      return res.status(400).json({ message: 'Utilisateur non trouvé' });
    }

    const resetToken = crypto.randomBytes(32).toString('hex');
    const hashedToken = crypto.createHash('sha256').update(resetToken).digest('hex');
    user.resetPasswordToken = hashedToken;
    user.resetPasswordExpires = Date.now() + 3600000; // 1 hour

    await user.save();

    const resetUrl = `http://localhost:3000/reset/${resetToken}`;

    const mailOptions = {
      to: user.email,
      from: process.env.EMAIL_FROM,
      subject: 'Réinitialisation du mot de passe',
      text: `Vous recevez cet email parce que vous (ou quelqu'un d'autre) avez demandé la réinitialisation du mot de passe de votre compte.nn
             Cliquez sur le lien suivant ou copiez-le dans votre navigateur pour compléter le processus :nn
             ${resetUrl}nn
             Si vous n'avez pas demandé cette réinitialisation, veuillez ignorer cet email et votre mot de passe restera inchangé.n`,
    };

    await transporter.sendMail(mailOptions);

    res.status(200).json({ message: 'Email de réinitialisation envoyé' });
  } catch (error) {
    console.error('Erreur lors de la demande de réinitialisation de mot de passe :', error);
    res.status(500).json({ message: 'Erreur lors de la demande de réinitialisation de mot de passe' });
  }
};

I’ve verified that my environment variables are set correctly.
I’ve also tried setting secure: true with port 465, but I still encounter the same issue.

What I’ve Tried:
Verified that the email and password are correct.

Ensured the .env file is correctly loaded and variables are accessible.

Tested different combinations of secure and port.
Environment:
Node.js version: 20.15.0
Nodemailer version: 6.9.14
Operating System: Windows 11
What could be causing this error, and how can I resolve it?
Thank you for your help!