Re: LWP, "certificate verify failed" on known good certificate (paypal.com)

Maybe curl and openssl use the PEM files that are installed globally on your system while Mozilla::CA contains different certificates?

I'm not sure how you can easily/conveniently compare the certificate chains between Mozilla::CA and the OS. Maybe you can try and set the global certificate through

    IO::Socket::SSL::default_ca(  SSL_ca_path => '/etc/ssl/...' );
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Re^2: LWP, "certificate verify failed" on known good certificate (paypal.com) by tunafish (Beadle) on May 31, 2015 at 07:46 UTC
Nailed it! I fixed the problem by adding `ssl_opts => { verify_hostname => 1, SSL_ca_file => '/path/to/servers/ca-bundle'}` to `LWP::UserAgent->new()`.	[reply]