# Cannot issue for \\"reverse-proxy.traefik.\\": Domain name ends in a dot"

**URL:** <https://community.traefik.io/t/cannot-issue-for-reverse-proxy-traefik-domain-name-ends-in-a-dot/11345>\
**Category:** Traefik v1\
**Tags:** docker\
**Created:** [July 30, 2021, 12:47pm UTC](https://community.traefik.io/t/cannot-issue-for-reverse-proxy-traefik-domain-name-ends-in-a-dot/11345 "2021-07-30T12:47:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![natthanan](https://avatars.discourse-cdn.com/v4/letter/n/c4cdca/32.png) [@natthanan](https://community.traefik.io/u/natthanan)\
**Post date:** [July 30, 2021, 12:47pm UTC](https://community.traefik.io/t/cannot-issue-for-reverse-proxy-traefik-domain-name-ends-in-a-dot/11345/1 "2021-07-30T12:47:22Z")

</div>

Hi, I have to maintain system that use traefik and I have to change certificate. When I changed it, I see log from traefik container like this, and my system cannot be accessed anymore :(. Can someone help me to find the problem cause, thank you.

This is the full error message I've got.  
Unable to obtain ACME certificate for domains "reverse-proxy.traefik." detected thanks to rule "Host:reverse-proxy.traefik." : cannot obtain certificates: acme: Error 400 - urn:ietf:params:acme:error:rejectedIdentifier - Error creating new order :: Cannot issue for "reverse-proxy.traefik.": Domain name ends in a dot

This is my traefik.toml

```auto
debug = false

logLevel = "ERROR"
defaultEntryPoints = ["https","http"]

[entryPoints]
  [entryPoints.http]
  address = ":80"
    [entryPoints.http.redirect]
    entryPoint = "https"
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
      [[entryPoints.https.tls.certificates]]
      certFile = "certs/cdgssl-2020.crt"
      keyFile = "certs/cdgssl-2020.pem"

[retry]

[docker]
endpoint = "unix:///var/run/docker.sock"

# Specify root domain
domain = "alive-uat.cdg.co.th"
watch = true
exposedByDefault = false

[acme]
email = "natthanank14s@gmail.com"
storage = "acme.json"
entryPoint = "https"
onHostRule = true

# Specify ACME domains (multiple domains with wildcards allowed)
[[acme.domains]]
  main = "alive-uat.cdg.co.th"

# Specify DNS Challenge Provider
[acme.httpChallenge]
entryPoint = "http"

```