Smtp server q&a webinar
- 1. SMTP Server Q&A How SMTP server works
- 2. Agenda • How SMTP server works? • Setting up for receiving • Setting up for sending • What is RBL (DNSBL) and how it works? • How SMTP server checks incoming message? • Avoiding spam traps
- 3. How SMTP server works
- 4. Setting up server for receiving 1. Set up SMTP server 2. Set up static IP on the server computer 3. Check your routers to make sure port 25 is open 4. Make sure your external (router) IP is static 5. Point all IP addresses for MX records of all domains you want to control to your static IP address
- 5. 1. Static IP on server PC
- 6. 2. Check external routers
- 7. 4. Set up DNS zone file with MX record
- 8. Setting up server for sending 1. Perform 1-5 above 2. Add reverse DNS (PTR) lookup (ask your ISP) 3. Add SPF 4. Make sure your external IP is not listed in RBL
- 9. What is reverse DNS check
- 10. Check your reverse DNS
- 11. How SPF records are checked
- 12. Setting up SPF records
- 13. How RBL verification works
- 14. How to check your IP in RBL servers