Lets encrypt failing on apple devices

Discussion in 'General' started by martinhe, Sep 30, 2021.

  1. martinhe

    martinhe Member

    EDIT: This probably applies to all Apple devices, not just the older ones.


    does anyone notice problems with lets encryp on older apple devices?

    Alternatively, how to solve it? They see the certificate, but they consider it untrustworthy.

    It can affect that openssl writes:
    • verify error: num = 20: unable to get local issuer certificate
    • verify error: num = 21: unable to verify the first certificate
    • Verify return code: 21 (unable to verify the first certificate)

    Thanks so much for the advice.
    Last edited: Sep 30, 2021
  2. Taleman

    Taleman Well-Known Member HowtoForge Supporter

    How old?
    It may be it does not have trust for new certificate authorities or their signing. If you have checked with ssl checker (website, find using Internet Search Engines) certificate is OK but you device does not accept it this may be the case.,
  3. ahrasis

    ahrasis Well-Known Member HowtoForge Supporter

    Use newer devices of course.
  4. till

    till Super Moderator Staff Member ISPConfig Developer

    Take a look at the postfix and dovecot config to see if the SSL certificate chain is configured there. If that#s missing, then it might be that older services are not able to verify the validity of an LE cert.

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