diff --git a/dovecot/10-ssl.conf b/dovecot/10-ssl.conf
index 044133c..eb196dd 100644
--- a/dovecot/10-ssl.conf
+++ b/dovecot/10-ssl.conf
@@ -1,4 +1,4 @@
 ssl = required
-ssl_cert = </tls/fullchain
-ssl_key = </tls/privkey
+ssl_cert = </tls/fullchain.pem
+ssl_key = </tls/key.pem
 ssl_dh = </etc/dovecot/dh-params/2048.pem
diff --git a/postfix/Dockerfile b/postfix/Dockerfile
index 12cc768..c1c15f2 100644
--- a/postfix/Dockerfile
+++ b/postfix/Dockerfile
@@ -28,8 +28,8 @@ RUN echo '' > /etc/postfix/main.cf \
     && postconf -e smtpd_banner='$myhostname ESMTP $mail_name' \
     && postconf -e smtpd_use_tls='yes' \
     && postconf -e smtpd_tls_loglevel='1' \
-    && postconf -e smtpd_tls_key_file='/tls/privkey' \
-    && postconf -e smtpd_tls_cert_file='/tls/fullchain' \
+    && postconf -e smtpd_tls_key_file='/tls/key.pem' \
+    && postconf -e smtpd_tls_cert_file='/tls/fullchain.pem' \
     && postconf -e smtpd_tls_security_level='may' \
     && postconf -e smtpd_tls_auth_only='yes' \
     && postconf -e smtpd_tls_mandatory_protocols='!SSLv2,!SSLv3,!TLSv1,!TLSv1.1' \