SMTP Checker

This tool is designed to test SMTP server credentials from a sample file and report on their validity.

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📋 Requirements:

• Python Environment: Ensure you have Python set up on your machine.
• Python Libraries: This tool uses the smtplib and os standard libraries.
• SMTP Sample File (smtps.txt): The file should have the following structure:

URL: <URL>
METHOD: <METHOD>
MAILHOST: <SMTP_HOST>
MAILPORT: <SMTP_PORT>
MAILUSER: <SMTP_USER>
MAILPASS: <SMTP_PASS>
MAILFROM: <MAIL_FROM> (Optional)
FROMNAME: <FROM_NAME> (Optional)

• Environment Variables: Store default email subject and recipient in an .env file:
• DEFAULT_EMAIL_SUBJECT
• DEFAULT_RECIPIENT

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🚀 Plan:

1. Load Environment Variables: Extract values from the .env file.
2. Extract SMTP Details: Read the smtps.txt sample file.
3. Test SMTP Credentials:

• Use provided MAILFROM and FROMNAME or defaults if not provided.
• Handle both port 465 (SSL) and ports [587,585, 1025, 2525, 25] (TLS).

4. Write Results:

• Success: Working SMTP credentials are saved to working_smtps.txt.
• Failure: Failed SMTP credentials, along with errors, are saved to failed_smtps.txt. Both files maintain the structure of the sample file.

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🛠 Usage:

1. Ensure the SMTP sample file (smtps.txt) is in the same directory as the script.
2. Execute the script: python main.py.
3. Review Results:

• Valid Credentials: Check working_smtps.txt.
• Invalid Credentials: Refer to failed_smtps.txt.