Serving with Postfix

[Ref: Postfix]

Postfix attempts to be fast, easy to administer, and secure. The outside has a definite Sendmail-ish flavor, but the inside is completely different.

OpenBSD ships preconfigured with Sendmail as the mail server (MTA.)

For various reasons, we have investigated, installed, maintained diverse configurations of Postfix as a Mail Server (MTA.) This section of notes explore configurations for Postfix we have deployed.

• GUI Administration using PostfixAdmin for User Administration of Mail Accounts maintained through SQL Databases
• Mail Server Postfix as a replacement for sendmail
• MX Proxy Postfix as a passthrough Proxy between your Internal Mail Servers and the bad Internet.
• MX Proxy Multiple Instances Postfix as an MX Proxy, but with some low-cost, high-value filtering enabled.
• Virtual Accounts A basic Postfix configuration for email virtual accounts.
• Multiple Virtual Domains An extended example of the above, with virtual accounts for more than a single domain.