v4.4

Billionmail/BillionMailv4.4Sep 4, 2025by dreambladeflag

AI Summary

This release focuses on enhancing outbound IP management and system stability. It introduces domain-specific IP allocation while removing arbitrary file read functionality for security. Key highlights include Postfix configuration optimizations, database constraint fixes, and improved reverse proxy compatibility.

Key Highlights

Domain-specific IP allocation for different domains
Postfix configuration enhancement for relay settings
Security reinforcement by removing file read/download
Database constraint resolution in email_tasks table
SSL certificate automatic renewal fix

New Features

Outbound IP binding in domain management
Postfix configuration optimization
Security reinforcement
Database constraint resolution
Reverse proxy compatibility
SSL certificate maintenance

Full Release Notes

# BillionMail v4.4 Release Notes  

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## 🌐 Outbound IP Binding  
- **Domain-specific IP allocation**  
  Added outbound IP binding in domain management, allowing assignment of dedicated sending IPs for different domains when the server has multiple outbound IP addresses

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## ⚙️ Core Optimizations  
- **Postfix configuration enhancement**  
  Optimized relay-related settings in main.cf configuration file and ensured proper SMTP hash file existence, significantly improving email delivery stability
- **Security reinforcement**  
  Removed arbitrary file read/download functionality from the interface to enhance system security protection

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## 🐛 Bug Fixes  
- **Database constraint resolution**  
  Fixed foreign key constraint issues in the `email_tasks` table that caused database operation exceptions
- **Reverse proxy compatibility**  
  Corrected reverse proxy configuration to ensure proper functionality when bypassing language detection and accessing test APIs, with improved handling of reverse proxy website abnormalities
- **SSL certificate maintenance**  
  Fixed Let's Encrypt certificate automatic renewal failure issue