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diff --git a/tutors/email/proposal.php b/tutors/email/proposal.php index 81e94d6..84d7daf 100644 --- a/tutors/email/proposal.php +++ b/tutors/email/proposal.php @@ -51,21 +51,45 @@ For these reasons, Squarespace cannot be considered a viable alternative to Google Domains. A third-party replacement is required to maintain existing operability and costs. </p> + <h2>Path of equivalent cost and minimal functionality</h2> + + <p> + Porkbun also offers one-way email forwarding for $3.00 per address per year. For ten tutors this would be $30.00 billed annually and does not account for domain registration costs. While much more affordable, it is critical for tutors to be able to send mail to clients as well as receive it. Therefore this is not an option. + </p> + <h2>Path of higher cost and equivalent functionality</h2> - <h2>Path of equivalent cost and minimal functionality</h2> + <p> + To quickly get set up and running again with little operational overhead, Porkbun offers mail hosting for $2.00 per month per inbox. For ten tutors this would be $240.00 billed annually and does not take into account the domain registration costs. Every tutor would receive a dedicated webmail interface and be able to configure two-way forwarding just like they had previously. As the number of tutors grows, this starts to become less cost-effective compared to other options. + </p> <h2>Path of low cost and increased functionality</h2> + <p> + The optimal solution that provides the lowest cost and the highest comparable functionality is transferring domains only to Porkbun and implementing self-hosted email on the Carpenter Tutoring web server. This will provide a virtually unlimited number of tutors with a virtual unlimited capacity mailbox each. It also provides Carpenter Tutoring with greater control over company data and communications. Additional forwarding addresses can be constructed for information "blurb"s or mailing lists. + </p> + + <p> + The cost of this solution is the accounted for domain registration fee ($9.73 renewal, $11.48 one-time transfer). The operating cost of the mail server is the electricity powering the existing homepage and Nextcloud instance. + </p> + <h2>Architecture</h2> - <h2>Implementation</h2> + <p> + Here is a rough architectural overview. + Porkbun registers the domain name and DNS configuration pointing MX records to MTA mail.53hor.net. At mail.53hor.net are an SMTP server and an IMAP server. Every tutor gets a virtual user and mailbox and the appropriate configuration to use any mail client of their choice. + </p> - <h2>Security considerations</h2> + <p> + Spam filters prevent unwarranted and unwanted messages from arriving on all tutors' inboxes. Common rules can be set up to redirect known spam away from inboxes and into junk for all tutors. Additionally, DKIM is configured to make sure mail is delivered to major tech mail providers (Google, Microsoft, Apple) who require it. + </p> - <h2>Cost considerations</h2> + <h2>Implementation</h2> + + <p>OpenSMTPD is used as an MTA, sending mail and running the necessary actions on incoming and outgoing mail requests. Dovecot exists as an IMAP virtual mailbox for tutors to authenticate with and check mail. Rspamd is a spam filter integrating with Dovecot. + </p> - <h2>Uptime/resiliency considerations</h2> + <p>Useful starting information <a href="https://www.davd.io/tags/mail/">here</a>.</p> </div> |