# DNS problem: SERVFAIL looking up CAA

**URL:** <https://community.letsencrypt.org/t/dns-problem-servfail-looking-up-caa/89284>\
**Category:** Help\
**Created:** [March 21, 2019, 7:36am UTC](https://community.letsencrypt.org/t/dns-problem-servfail-looking-up-caa/89284 "2019-03-21T07:36:45Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![\_az](https://avatars.discourse-cdn.com/v4/letter/_/22d042/32.png) [@\_az](https://community.letsencrypt.org/u/_az)\
**Post date:** [March 21, 2019, 8:50am UTC](https://community.letsencrypt.org/t/dns-problem-servfail-looking-up-caa/89284/4 "2019-03-21T08:50:07Z")

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Following [this trick](https://community.letsencrypt.org/t/acme-client-on-openbsd-6-3/61785/8?u=_az) from @mnordhoff to identify that these nameservers are running PowerDNS, if you run the nameservers , you could also try to rehash the zone:

```
sudo pdnsutil rectify-zone smoki.fish

```

or if you don’t run the nameservers, you can ask the operator to do the same.

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