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Introduction to a Self Managed Life: a 13 hour & 28 minute presentation by FUTO software
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=== Rule 4: Forwarding IMAP (Port 143) === * '''Protocol''': IPv4 TCP * '''Source''': <code>mailserver_trusted_clients</code> * '''Destination''': 192.168.5.3 * '''Port''': 143 (IMAP) * '''Description''': NAT Forward Dovecot IMAP to Mailcow <span id="what-this-rule-does"></span> ==== What this rule does: ==== * This rule forwards IMAP traffic on port 143 to the Mailcow server at 192.168.5.3. * IMAP (Internet Message Access Protocol) is used by email clients to retrieve emails from the mail server. IMAP allows users to keep their emails on the server and access them from multiple devices. * '''Why this is needed''': This rule allows clients to access their emails using the non-encrypted version of IMAP on port 143. It allows clients to view and manage their emails stored on the server without downloading them to their devices. * '''When this NOT needed''': This rule is unnecessary if you are receiving mail by connecting to your mailserver via VPN, or locally on your home network. It is unnecessary if you do not have external services such as freshdesk that you integrate with your mailserver <span id="rule-5-forwarding-imaps-port-993"></span>
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