Postfix on a Mac
SMTP mail transfer agent · Mail
Postfix is the SMTP server Apple Server used under the hood, so migrating its main.cf/master.cf is largely a copy (FrontierStack's mail importer reads /Library/Server/Mail/Config). Install with Homebrew (brew install postfix) or a Linux package, pair it with Dovecot for IMAP/POP, and harden it with the Mail Security tools (SPF/DKIM/DMARC, open-relay test).
Run Postfix with FrontierStack
FrontierStack lists Postfix in its Mail catalog. Install or connect it from one place, then monitor its status, ports and certificate, secure it with the firewall and Malware Audit, and back it up.
Run it all from one Mac app.
FrontierStack installs, monitors and secures the whole stack — locally and across your fleet — from a single native macOS app.
Download FrontierStack