Installing Dovecot in Digitalocean allows us to use an open-source service for IMAP and POP3 on Unix-like operating systems.

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Let’s have a look at how our Support team assisted a customer with installing Dovecot in Digitalocean.

Installing Dovecot in Digitalocean

Dovecot is widely regarded as one of the best IMAP servers available today, and it still supports the Maildir and mbox file formats. It ensures a high level of performance and complete compatibility with current mailbox handling tools by indexing mailboxes transparently.

Packages

1. Firstly, run the command to install dovecot

   aptitude install dovecot-core dovecot-imapd
2. To install the default package , run the command:-

   aptitude install dovecot-common
3. Then, clear out the contents in the file: /etc/dovecot/dovecot.conf
4. Now, in the configuration file, type the following:

   disable_plaintext_auth = no
   mail_privileged_group = mail
   mail_location = mbox:~/mail:INBOX=/var/mail/%u
   userdb {
     driver = passwd
   }
   passdb {
     args = %s
     driver = pam
   }
   protocols = " imap"

   This allows to use “plaintext” authentication, which is then tunnelled through TLS. It instructs dovecot to access local mailboxes and their locations using the mail system group, to authenticate users using the unix authentication system, and to use imap only.
5. We can have Dovecot add a Trash and Sent folder to mailboxes automatically if we want.

   protocol imap {
     mail_plugins = " autocreate"
   }
   plugin {
     autocreate = Trash
     autocreate2 = Sent
     autosubscribe = Trash
     autosubscribe2 = Sent
   }

    
6. Then, the next step is to create a socket that postfix can use to leverage dovecot’s authentication.

7. Finally, configure the SSL.

   ssl=required
   ssl_cert = </etc/ssl/certs/mailcert.pem
   ssl_key = </etc/ssl/private/mail.key

   Make sure to note the angle brackets. They instruct Dovecot to read a file.

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   Conclusion

   To sum up, our Support team demonstrated how to install dovecot in a Digitalocean droplet.

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