feat(role): Initial commit

templates/etc/postfix/smtp_header_checks.j2

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: MIT
+# In our 'From:' header reuse any mail display name then append our
+# official sender e-mail address.
+/^From:[[:space:]]*(.+?)([[:space:]]*<)/ REPLACE From: "${1}" <{{ somta__e_mail_default_sender_addr_spec }}>
+
+# Hide the sender's IP and user agent in the Received header
+# https://wiki.archlinux.org/title/Postfix
+/^Received:.*/           IGNORE
+/^User-Agent:.*/         IGNORE