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Cloudron Forum

Apps | Demo | Docs | Install

I believe I'm having issues with DNS

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unbounddns
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  • M Offline
    M Offline
    Mastadamus
    wrote on last edited by girish
    #1

    I think something is going wrong with my new cloudron build. First I ran into DNS issues with the install script and had to do --redo.. Now I've had the email outbound SMTP randomly turn red and give me a "getaddrinfo EAI_AGAIN smtp.mailgun.org:587" error. I also have things like Rocketchat gif plugins start failing to find gifs, and I also had a container update error.. All of this corrects itself when I restart unbound. I've checked the unbound logs though and I see no issues. Any ideas?

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  • M Offline
    M Offline
    Mastadamus
    wrote on last edited by
    #2

    Note, my cloudron build is on ubuntu 20.04. This is a fresh install. I've SSH' on the box and curl'd google when I started having DNS troubles, and it wouldn't resolve. I restarted unbound(even though it was showing green) and It immediately started working. If i wait a period of time, something breaks again, and I start having resolver issues.

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  • M Offline
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    Mastadamus
    replied to Mastadamus on last edited by
    #3

    @Mastadamus Also note, i've seen nothing blocked outbound from my firewall for this host.

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  • M Offline
    M Offline
    Mastadamus
    replied to Mastadamus on last edited by Mastadamus
    #4

    @Mastadamus It just randomly can't resolve mailgun
    61d88e62-904a-42bf-91ab-6aa304d658d0-image.png

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  • M Offline
    M Offline
    Mastadamus
    replied to Mastadamus on last edited by
    #5

    @Mastadamus df292bcd-7a4c-451d-81a7-b33c6e1f6bf8-image.png

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    M Offline
    Mastadamus
    replied to Mastadamus on last edited by
    #6

    @Mastadamus Then I restart Unbound and boom.. can resolve mailgun. This last time it seemed only mail gun was affected. Previous times I couldn't even resolve google
    6d938b8c-bf64-423e-989a-acfb7176668e-image.png

    girishG 1 Reply Last reply
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  • girishG Offline
    girishG Offline
    girish Staff
    replied to Mastadamus on last edited by
    #7

    @Mastadamus Looks like some DNSSEC error. Can you try disabling DNSSEC as described here - https://docs.cloudron.io/troubleshooting/#dns ?

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    Mastadamus
    replied to girish on last edited by
    #8

    @girish I ended up configuring a forward lookup zone and forward all requests to my other internal dns server and now it works great. I will try some troubleshooting this week.

    girishG 1 Reply Last reply
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  • girishG Offline
    girishG Offline
    girish Staff
    replied to Mastadamus on last edited by
    #9

    @Mastadamus From the earlier screenshot you posted, the issue seems to be "Could not establish chain of trust". So, I would investigate that angle (which is DNSSEC related)

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