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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