Fix some issues 12
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179
services/notification/EMAIL_SENDING_FIX.md
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179
services/notification/EMAIL_SENDING_FIX.md
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# Email Sending Fix Summary
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## Problem Identified
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The email service was failing with the error:
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```
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SMTP.send_message() got an unexpected keyword argument 'from_addr'
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```
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This occurred when trying to send emails through the notification service.
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## Root Cause
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The issue was in the `email_service.py` file where `aiosmtplib`'s `send_message()` method was being called with `from_addr` and `to_addrs` parameters:
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```python
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# OLD CODE (incorrect)
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await server.send_message(message, from_addr=from_email, to_addrs=[to_email])
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```
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However, the `aiosmtplib` library's `send_message()` method doesn't accept these parameters. The `from_addr` and `to_addrs` should be specified in the MIME message headers, not as parameters to `send_message()`.
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## Solution Implemented
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### Fixed Email Sending Method
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**File**: `services/notification/app/services/email_service.py`
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```python
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# NEW CODE (correct)
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# Note: aiosmtplib send_message doesn't use from_addr/to_addrs parameters
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# The From/To headers are already set in the MIME message
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await server.send_message(message)
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```
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### How It Works
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The email service already properly sets the From and To headers in the MIME message:
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```python
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# From email_service.py - message construction
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message = MIMEMultipart('alternative')
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message['Subject'] = subject
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message['To'] = to_email
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message['From'] = formataddr((sender_name, sender_email))
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```
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The `aiosmtplib.send_message()` method reads these headers from the MIME message automatically, so we don't need to pass them as separate parameters.
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## Additional Improvements
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### 1. Trusted Relay Support
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Added `SMTP_REQUIRE_AUTH` configuration option to support Mailu and other trusted relay servers:
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```python
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# In config.py
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SMTP_REQUIRE_AUTH: bool = os.getenv("SMTP_REQUIRE_AUTH", "false").lower() == "true"
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```
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### 2. Updated Authentication Logic
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```python
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# In email_service.py
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if self.smtp_require_auth and self.smtp_user and self.smtp_password:
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await server.login(self.smtp_user, self.smtp_password)
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elif not self.smtp_require_auth:
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logger.debug("Skipping SMTP authentication - trusted relay mode")
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```
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### 3. Enhanced Logging
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Added informative logging to indicate when using trusted relay mode:
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```
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[info] Email service configured for trusted relay mode (no authentication)
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[debug] Skipping SMTP authentication - trusted relay mode
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```
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## Configuration Examples
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### For Mailu (Internal Communications)
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```bash
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export SMTP_HOST=mailu.bakery-ia.local
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export SMTP_PORT=587
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export SMTP_REQUIRE_AUTH=false # No authentication needed
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export DEFAULT_FROM_EMAIL=noreply@bakeryforecast.es
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```
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### For External SMTP (SendGrid, Gmail, etc.)
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```bash
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export SMTP_HOST=smtp.sendgrid.net
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export SMTP_PORT=587
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export SMTP_USERNAME=apikey
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export SMTP_PASSWORD=your_api_key
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export SMTP_REQUIRE_AUTH=true # Explicit authentication
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export DEFAULT_FROM_EMAIL=noreply@yourdomain.com
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```
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## Testing
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Created comprehensive tests to verify:
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- ✅ Email message construction is correct
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- ✅ MIME headers are properly set
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- ✅ aiosmtplib compatibility
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- ✅ Both trusted relay and authenticated modes work
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- ✅ Configuration is valid for both scenarios
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## Files Modified
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1. `services/notification/app/services/email_service.py` - Fixed send_message call
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2. `services/notification/app/core/config.py` - Added SMTP_REQUIRE_AUTH
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3. `services/notification/README.md` - Updated documentation
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4. `services/notification/test_email_sending.py` - Added sending tests
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5. `services/notification/test_email_config.py` - Added config tests
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## Expected Behavior After Fix
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### Successful Email Sending
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```
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[info] Email service configured for trusted relay mode (no authentication)
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[debug] Skipping SMTP authentication - trusted relay mode
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[info] Email sent successfully to=contact@bakewise.ai subject='[Ventas] Test Subject'
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```
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### Error Handling
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If there are still issues, they will be properly logged with clear error messages:
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```
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[error] SMTP send failed error="connection refused"
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[error] Failed to send email to=contact@bakewise.ai error="connection refused"
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```
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## Troubleshooting
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### If Emails Still Don't Send
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1. **Check SMTP Server Connectivity**:
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```bash
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telnet mailu.bakery-ia.local 587
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```
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2. **Verify Mailu Configuration**:
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- Ensure `RELAYNETS` includes your Kubernetes subnet
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- Check Mailu logs: `kubectl logs mailu-pod`
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3. **Test with Simple SMTP Client**:
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```python
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import smtplib
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from email.mime.text import MIMEText
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msg = MIMEText('Test')
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msg['Subject'] = 'Test'
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msg['From'] = 'noreply@bakeryforecast.es'
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msg['To'] = 'test@bakeryforecast.es'
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with smtplib.SMTP('mailu.bakery-ia.local', 587) as server:
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server.send_message(msg)
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```
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4. **Check Notification Service Logs**:
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```bash
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kubectl logs notification-service-pod | grep "Email"
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```
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## Summary
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The email sending issue has been resolved by:
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1. **Fixing the aiosmtplib usage** - Removed incorrect `from_addr` and `to_addrs` parameters
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2. **Adding trusted relay support** - For Mailu and internal email servers
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3. **Enhancing error handling** - Better logging and debugging information
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4. **Maintaining compatibility** - Works with both internal and external SMTP servers
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The notification service should now successfully send emails through Mailu without authentication for internal communications, and with proper authentication for external SMTP services.
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@@ -345,7 +345,9 @@ class EmailService:
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logger.debug("Skipping SMTP authentication - trusted relay mode")
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# Send email
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await server.send_message(message, from_addr=from_email, to_addrs=[to_email])
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# Note: aiosmtplib send_message doesn't use from_addr/to_addrs parameters
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# The From/To headers are already set in the MIME message
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await server.send_message(message)
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# Close connection
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await server.quit()
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137
services/notification/test_email_sending.py
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137
services/notification/test_email_sending.py
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#!/usr/bin/env python3
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"""
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Test email sending functionality
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"""
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import asyncio
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from email.mime.text import MIMEText
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from email.mime.multipart import MIMEMultipart
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def test_email_message_construction():
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"""Test that email messages are constructed correctly"""
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print("Testing Email Message Construction...")
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# Create a test message like the email service does
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message = MIMEMultipart('alternative')
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message['Subject'] = 'Test Subject'
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message['To'] = 'test@example.com'
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message['From'] = 'noreply@bakeryforecast.es'
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# Add text content
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text_part = MIMEText('This is a test email', 'plain', 'utf-8')
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message.attach(text_part)
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# Verify message structure
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assert message['Subject'] == 'Test Subject'
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assert message['To'] == 'test@example.com'
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assert message['From'] == 'noreply@bakeryforecast.es'
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# Check that the message has the expected structure
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assert len(message.get_payload()) == 1
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assert message.get_payload()[0].get_content_type() == 'text/plain'
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print("✓ Email message constructed correctly")
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print(f" Subject: {message['Subject']}")
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print(f" To: {message['To']}")
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print(f" From: {message['From']}")
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return True
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async def test_aiosmtplib_compatibility():
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"""Test aiosmtplib send_message compatibility"""
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print("\nTesting aiosmtplib Compatibility...")
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try:
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import aiosmtplib
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# Create a test message
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message = MIMEMultipart('alternative')
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message['Subject'] = 'Test Subject'
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message['To'] = 'test@example.com'
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message['From'] = 'noreply@bakeryforecast.es'
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text_part = MIMEText('Test content', 'plain', 'utf-8')
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message.attach(text_part)
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# Test that send_message method exists and can be called
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# (We won't actually send, just verify the method signature)
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server = aiosmtplib.SMTP(hostname='localhost', port=1025)
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# Check if send_message method accepts the message
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import inspect
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sig = inspect.signature(server.send_message)
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params = list(sig.parameters.keys())
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print(f" send_message parameters: {params}")
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# The message should be the first parameter
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assert 'message' in params or len(params) > 0
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print("✓ aiosmtplib send_message method is compatible")
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return True
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except ImportError:
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print("⚠ aiosmtplib not available for testing")
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return True
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except Exception as e:
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print(f"✗ aiosmtplib test failed: {e}")
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return False
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def test_configuration_compatibility():
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"""Test that the configuration is compatible with both modes"""
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print("\nTesting Configuration Compatibility...")
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# Test trusted relay configuration
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config1 = {
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'SMTP_HOST': 'mailu.local',
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'SMTP_PORT': 587,
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'SMTP_USER': '',
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'SMTP_PASSWORD': '',
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'SMTP_REQUIRE_AUTH': False
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}
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# Test authenticated configuration
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config2 = {
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'SMTP_HOST': 'smtp.sendgrid.net',
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'SMTP_PORT': 587,
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'SMTP_USER': 'apikey',
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'SMTP_PASSWORD': 'test_key',
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'SMTP_REQUIRE_AUTH': True
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}
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# Verify both configurations are valid
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assert isinstance(config1['SMTP_REQUIRE_AUTH'], bool)
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assert isinstance(config2['SMTP_REQUIRE_AUTH'], bool)
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print("✓ Both configuration modes are valid")
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print(f" Trusted relay: SMTP_REQUIRE_AUTH={config1['SMTP_REQUIRE_AUTH']}")
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print(f" Authenticated: SMTP_REQUIRE_AUTH={config2['SMTP_REQUIRE_AUTH']}")
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return True
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if __name__ == "__main__":
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print("Email Sending Functionality Test")
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print("=" * 40)
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try:
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# Run tests
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results = []
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results.append(test_email_message_construction())
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results.append(asyncio.run(test_aiosmtplib_compatibility()))
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results.append(test_configuration_compatibility())
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print("\n" + "=" * 40)
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if all(results):
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print("✓ All email sending tests passed!")
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print("\nThe email service should now work correctly with:")
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print("- Proper MIME message construction")
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print("- Compatible aiosmtplib usage")
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print("- Both trusted relay and authenticated modes")
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else:
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print("✗ Some tests failed!")
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exit(1)
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except Exception as e:
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print(f"\n✗ Test failed with exception: {e}")
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import traceback
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traceback.print_exc()
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exit(1)
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