text & image course
April 3, 2025
4 chapters · 23 lessons
smtp/sms major issues and how to fix them including ssl
AI-generated course with 4 chapters and 23 lessons.
Includes theory, images, an interactive quiz and a downloadable certificate.
Course Content
1
Authentication and Authorization Issues
5 lessons
- Incorrect Credentials
- Insufficient Permissions/Role-Based Access Control (RBAC)
- Weak Password Policies/Brute-Force Attacks
- IP Address Whitelisting/Blacklisting
- Two-Factor Authentication (2FA) Implementation
2
Delivery Problems and Spam Filtering
6 lessons
- Email Blacklisting (RBLs)
- SPF, DKIM, and DMARC Configuration Errors
- Content Filtering/Spam Trigger Words
- Poor Sender Reputation
- Invalid Email Addresses/Bounces
- SMS delivery failures due to carrier filtering
3
SSL/TLS Certificate and Encryption Issues
6 lessons
- Expired or Invalid SSL/TLS Certificates
- Incorrect SSL/TLS Configuration (e.g., Cipher Suites)
- SSL/TLS Handshake Failures
- Vulnerable SSL/TLS Protocols (e.g., SSLv3, TLS 1.0)
- Man-in-the-Middle (MitM) Attacks
- Use of Self-Signed Certificates in Production
4
Rate Limiting and Throttling Problems
6 lessons
- Exceeding API Rate Limits
- Server Overload/Resource Exhaustion
- Queue Congestion/Message Backlog
- Improper Error Handling/Retry Logic
- DoS/DDoS Attacks
- SMS Throttling issues from service provider
