diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index ffc5dd3..3bfd683 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -14,16 +14,18 @@ depends=(libevent libressl pam libxcrypt zlib)
 optdepends=('opensmtpd-filter-rspamd: rspamd integration')
 provides=(smtp-server smtp-forwarder)
 conflicts=(smtp-server smtp-forwarder)
-backup=(etc/smtpd/smtpd.conf etc/smtpd/aliases)
+backup=(etc/smtpd/smtpd.conf etc/smtpd/aliases etc/pam.d/smtpd)
 options=(emptydirs)
 source=("https://www.opensmtpd.org/archives/${pkgname}-${pkgver}.tar.gz"
         opensmtpd.sysusers
         smtpd.service
-        smtpd.socket)
+        smtpd.socket
+        opensmtpd.pam)
 sha256sums=('7478e918b41e734a39ad082df55cb2607f0933a506fab2c3dd3554a95cdf08ca'
             'b38b64f1457b7227d55585edc711cce525e089516d16b093e6c44387380e6b13'
             'abf5baeb2a87c60d668ad18ea41cc08cab7a4f76339dd6df05de15cdaadaf922'
-            '32d46de5562d01de445d04c93bcc9f94bf103539b676e449c32e3603a3866cf8')
+            '32d46de5562d01de445d04c93bcc9f94bf103539b676e449c32e3603a3866cf8'
+            'd3c43764d1686cd484062d74e515a1693adaf8371939ef4a767c237047d7e9dc')
 install=${pkgname}.install
 
 prepare() {
@@ -68,4 +70,5 @@ package() {
   install -Dm644 ../smtpd.service -t "${pkgdir}"/usr/lib/systemd/system/
   install -Dm644 ../smtpd.socket -t "${pkgdir}"/usr/lib/systemd/system/
   install -Dm644 ../opensmtpd.sysusers "${pkgdir}"/usr/lib/sysusers.d/opensmtpd.conf
+  install -Dm644 ../opensmtpd.pam "${pkgdir}"/etc/pam.d/smtpd
 }
diff --git a/trunk/opensmtpd.pam b/trunk/opensmtpd.pam
new file mode 100644
index 0000000..1b9c262
--- /dev/null
+++ b/trunk/opensmtpd.pam
@@ -0,0 +1,5 @@
+#%PAM-1.0
+
+auth       requisite  pam_nologin.so
+auth       include    system-auth
+account    include    system-auth