Hi there, I'm facing an issue with my Django Payment app deployed on GoDaddy. The app sends an email after a successful payment using the smtplib and email libraries. The process I followed is:

• Created an Application Password in my Google Account
• Configured the SMTP settings with my email, app password, port 587, and smtp.gmail.com (which works locally)

However, when deployed on GoDaddy, I encounter the following error:

BASHCopied
[Errno 101] Network is unreachable
Traceback (most recent call last):
  File "/home/g549hesohwxf/public_html/pl_payment_gateway/app/utils.py", line 52, in send_email
    with smtplib.SMTP(smtp_server, smtp_port) as server:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/alt/python311/lib64/python3.11/smtplib.py", line 255, in __init__
    (code, msg) = self.connect(host, port)
                  ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/alt/python311/lib64/python3.11/smtplib.py", line 341, in connect
    self.sock = self._get_socket(host, port, self.timeout)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/alt/python311/lib64/python3.11/smtplib.py", line 312, in _get_socket
    return socket.create_connection((host, port), timeout,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/alt/python311/lib64/python3.11/socket.py", line 851, in create_connection
    raise exceptions[0]
OSError: [Errno 101] Network is unreachable

I also tried using Microsoft Office 365 SMTP settings (smtp.office365.com, port 587) with an email account created on my GoDaddy domain, as suggested by GoDaddy support. Unfortunately, this change still produces the same error. GoDaddy support claims the port isn’t blocked and that I should use their SMTP details, but the app fails while the email account itself works correctly outside of the Django app.

Below is the email sending code used in my application:

PYTHONCopied
import logging

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

logger = logging.getLogger()

def send_email(response_status_code, response_dict, order_details):
    logger.info("SETTING UP SMTP SERVER...")
        
    smtp_server = 'smtp.office365.com'
    smtp_port = 587
    smtp_username = 'no-reply@parkinglink.com.au'
    smtp_password = [hidden-password]
    sender_email = 'no-reply@parkinglink.com.au'
    receiver_email = order_details['email']
    
    logger.info("SETTING EMAIL DETAILS...")
    
    msg = MIMEMultipart()
    msg['From'] = sender_email
    msg['To'] = receiver_email
    msg['Subject'] = 'New Booking Creation Status | ParkingLink'
    
    booking_status = "NOT created"
    
    if int(response_status_code) == 200 and str(response_dict["success"]).lower() == "true":
        booking_status = "created successfully"
        
    logger.info("WRITING EMAIL BODY...")
    
    email_body = f"""
    Dear User,
    
    Your booking was {booking_status}.
    
    Regards,
    ParkingLink
    """
    
    logger.info("EMAIL BODY: %s", email_body) # CODE WORKS FINE UP TO THIS STEP
    
    msg.attach(MIMEText(email_body, 'plain'))
    
    try:
        logger.info("CONNECTING TO SMTP SERVER...")
        with smtplib.SMTP(smtp_server, smtp_port) as server:
            logger.info("STARTING TLS...")
            server.starttls()  # Secure the connection
            logger.info("LOGGING INTO EMAIL CLIENT...")
            server.login(smtp_username, smtp_password) 
            logger.info("CREATING NEW EMAIL...")
            text = msg.as_string()
            logger.info("SENDING EMAIL...")
            server.sendmail(sender_email, receiver_email, text) 
        logger.info("EMAIL SENT SUCCESSFULLY!")
    except Exception as e:
        logger.info("Failed to send email: %s", e, exc_info=True)

I'm looking for help to diagnose and resolve this network unreachable error on GoDaddy. Any guidance or suggestions would be appreciated.