# Default cert file for automatic ACME

**URL:** <https://discourse.haproxy.org/t/default-cert-file-for-automatic-acme/12120>\
**Category:** Help!\
**Created:** [January 28, 2026, 3:30pm UTC](https://discourse.haproxy.org/t/default-cert-file-for-automatic-acme/12120 "2026-01-28T15:30:16Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tetrov](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.haproxy.org/tetrov/32/2502_2.png) [@Tetrov](https://discourse.haproxy.org/u/Tetrov)\
**Post date:** [January 28, 2026, 3:30pm UTC](https://discourse.haproxy.org/t/default-cert-file-for-automatic-acme/12120/1 "2026-01-28T15:30:16Z")

</div>

Following a new automatic ACME tutorial here [Client-side encryption | HAProxy config tutorials](https://www.haproxy.com/documentation/haproxy-configuration-tutorials/security/ssl-tls/client-side-encryption/#example%3A-let%E2%80%99s-encrypt) , can I have one default certificate file for all the dynamically added domains through Data Plane API? Or how should I approach this?

```auto
load crt "default.pem" acme letsencrypt-staging domains "example1.com"

```

```auto
load crt "default.pem" acme letsencrypt-staging domains "example2.com"

```

```auto
load crt "default.pem" acme letsencrypt-staging domains "example3.com"

```