On 18/03/2022 15:25, lejeczek via bind-users wrote:

Hi L,

how to troubleshoot that?
...
18-Mar-2022 14:17:41.725 warning: EVP_VerifyFinal failed (verify failure)
18-Mar-2022 14:17:41.725 info: error:03000098:digital envelope routines::invalid digest:crypto/evp/pmeth_lib.c:959: 18-Mar-2022 14:17:41.725 info: validating paypal.com/DNSKEY: no valid signature found
...
I'd imagine must some up-the-chain servers doing something there - my local 'bind' does not point/use any specific forwarders.

The zone is correctly signed, but with RSASHA1, which is not recommended. You may be on a Linux distro whose openssl disables old algorithms like RSASHA1, and so BIND will not be able to validate this zone.

Regards,
Anand
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