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+# mail-conf
+ARFNET mail server configuration
+
+Postfix SMTP MTA and smtpd.
+With smtpd at ports 25, SMTPS submission at 465 and STARTTLS submission at 587.
+Accepts all connections, relays mail from authenticated users, rejects unauthenticated relaying.
+
+Dovecot IMAP daemon
+IMAP at 145 and IMAPS at 993
+
+Domain: `arf20.com` (MX mail.arf20.com) (PTR, TLSA, SPF, DKIM and DMARC configured)
+FQDN: `mail.arf20.com`
+hostname: `mail`
+mailname: `arf20.com`
+
+```
+postfix     
+|- master.cf        daemon instance specific, { smtpd, submission, submissions }
+|- main.cf          program specific, { smtp, smtpd }
+|- aliases          address aliases
+dovecot
+|- dovecot.conf     dovecot config
+gnu-mailutils
+|- mailutils.conf   GNU mailutils config
+|- .mailrc          user specific mail options
+```
+