Mail Server Setup & Administration

Self-hosted mail on Mailcow: Postfix, Dovecot, SOGo, Rspamd and ClamAV on Docker, with MX, PTR, SPF, DKIM and DMARC configured and validated.

I deploy and administer self-hosted mail infrastructure using the Mailcow stack on an Ubuntu VPS.

A working mail server is more than the install. Postfix and Dovecot handle transport and delivery, SOGo provides webmail and groupware, Rspamd and ClamAV filter what comes in — and all of it runs as Docker services that need to come back up cleanly after a restart. The part that decides whether your mail actually lands is the DNS side: MX and PTR records, SPF, DKIM and DMARC, each one checked against real delivery rather than assumed correct.

I work as a Mailcow administrator in Bangladesh, and I also handle the troubleshooting afterwards — reading Postfix logs to find out where a message went, and why.

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