Linux: Email Services

Introduction

• Welcome
• What you should know
• Required setup

1. Basic Setup

• Components of email delivery
• Set up Postfix as an SMTP server
• Send mail with Postfix internally
• Send mail with Postfix externally
• Set up and test a Dovecot POP3/IMAP server
• Test Dovecot from an external client
• Configure TLS
• Configure SASL
• Configure an email client
• Client software

2. Going Beyond Basic Services

• Database considerations
• Install database tools
• PostfixAdmin configuration
• Database creation
• Create virtual domains
• Finishing database configuration
• Setup virtual email accounts

3. Agent-Based Protection Against Spammers

• Exploring greylisting with Postgrey
• Spamassassin, ClamAV, and amavisd-new
• Spam tool installation
• Spam tool configuration
• Test spam tools

4. DNS-Based Protection Against Spammers

• SPF
• DKIM
• DMARC
• DANE

Conclusion

• Next steps