28.11 Summary
A complete, end-to-end email system consists of a Mail User Agent (MUA), Mail Transfer Agent (MTA), Mail Delivery Agent (MDA) and the SMTP protocol. Fedora 31 provides a number of options in terms of MTA solutions, one of the more popular being Postfix. This chapter has outlined how to install, configure and test postfix on a Fedora 31 system both to act as a mail server and to send and receive email using a third party SMTP relay server.