postalserver
DNS checks should use fully qualified names
I noticed that the code at https://github.com/postalhq/postal/blob/bb27d8c8a1703250a080caa0a182452aa4896783/app/models/domain/dns_checks.rb#L43 just uses the entered domain name without appending an "." (to make it fully qualified) This means in certain configurations, e.g. ndots:5 in resolv.conf, will cause DNS checks to fail.
Yes, I managed to reduce the ndots configuration in my kubernetes environment for the pod and it now works, but I believe this should be fixed
Ah cool, I'll leave it open as a bug so it'll get sorted one way or the other
I imagine I'll never get an answer to this but presumably you have use_local_ns_for_domains enabled?
I'm not sure, what does this setting do exactly? don't remember setting it explicity (and not fully involved in that project anymore)
Postal will usually try to query directly with your nameservers for these DNS checks which really shouldn't be affected by the ndots. If not, it'll use your local resolvers.
I can just add a trailing . to the end of the queries though for extra safety.
Please can you upgrade to the latest version of Postal and confirm whether this issue still exists? If so, please open a new issue for triage. Be sure to include any relevant log data as well as details about your environment as prompted by the new issue template.