# Mail-receiver log errors after letsencrypt update

**URL:** https://meta.discourse.org/t/mail-receiver-log-errors-after-letsencrypt-update/204938
**Category:** Support
**Created:** [October 1, 2021, 6:50am UTC](https://meta.discourse.org/t/mail-receiver-log-errors-after-letsencrypt-update/204938 "2021-10-01T06:50:27Z")
**Posts on this page:** 1
**Showing post:** 6

<div class="post-metadata">

### Author: ![md-misko](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/md-misko/32/126315_2.png) [@md-misko](https://meta.discourse.org/u/md-misko)
#### Post date: [October 11, 2021, 1:24pm UTC](https://meta.discourse.org/t/mail-receiver-log-errors-after-letsencrypt-update/204938/6 "2021-10-11T13:24:07Z")

</div>

I believe I figured this one out, there is a `maillog_file` line missing in the Dockerfile. Temp fix: added

```plaintext
  POSTCONF_maillog_file: '/dev/stdout'

```

to mail-receiver.yml and rebuilt, but this should probably be fixed in the docker image

> <https://github.com/discourse/mail-receiver/blob/main/Dockerfile>

```diff
RUN >/etc/postfix/main.cf \
+	&& postconf -e maillog_file=/dev/stdout \
	&& postconf -e smtputf8_enable=no \
...

```

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