diff --git a/opensmtpd/recipe.spec b/opensmtpd/recipe.spec
new file mode 100644
index 0000000..d40c316
--- /dev/null
+++ b/opensmtpd/recipe.spec
@@ -0,0 +1,16 @@
+name: opensmtpd
+release: 1
+version: 6.4.2p1
+sources: https://www.opensmtpd.org/archives/%{name}-%{version}.tar.gz
+
+build-dependencies: bison, libasr
+
+
+# TODO: add this to a future install script
+# (from alpine)
+#
+# addgroup -S smtpd 2>/dev/null
+# addgroup -S smtpq 2>/dev/null
+# adduser -S -D -H -h /dev/null -s /sbin/nologin -G smtpd -g 'SMTP Daemon' smtpd 2>/dev/null
+# adduser -S -D -H -h /dev/null -s /sbin/nologin -G smtpq -g 'SMTPD Queue' smtpq 2>/dev/null
+# mkdir -p /var/mail