Postfix user signatures

Per-user, server-side signatures driven by directory data - every employee gets their own name, title, and contact details automatically.

Postfix email signatures

One centrally managed, branded HTML signature applied to every message that leaves your Postfix server.

Postfix: add a signature to outgoing email

Step-by-step setup for signing outgoing mail only - the content_filter and alterMIME method, the milter method, and how to keep DKIM valid.

How to configure a Postfix disclaimer

Add a legal disclaimer to email with full HTML support and rules that decide exactly which messages get it.

Postfix disclaimer for outgoing mail

Apply a disclaimer to outbound mail only, leaving internal and inbound messages untouched.

Postfix autoresponder

Server-side automatic replies and out-of-office messages - scheduled, centrally managed, and loop-safe.

Block attachments in Postfix

Block or strip dangerous attachments by extension, type, or size using readable policy rules.

alterMIME alternative

Replace the alterMIME content filter with a maintained milter - HTML disclaimers, per-user data, and a migration path that does not interrupt mail.