Summary
In this chapter we saw the two mail protocols for retrieving e-mail, POP3 and IMAP, and explained some strengths and weaknesses. We then covered Courier-IMAP, which can provide both POP3 and IMAP services, and advised you to use a package from your Linux distributor. We also described how to build it from source, should this be required. We then discussed how to configure and test both the POP3 and IMAP services, including configuration of popular e-mail clients.
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