> ... the code above was working recently ... What could have changed?

The certificate of the server was changed and the admins have messed up the configuration. From the report from SSLLabs you can see that it reports Chain Issues - incomplete which means that the server fails to provide an essential intermediate certificate which is needed to build the trust chain to a local root certificate.

To deal with this situation you have to provide the missing certificates yourself. This can be done with 

my $ua = LWP::UserAgent->new;
$ua->ssl_opts(SSL_ca_file => 'trusted.pem');

[download]
where trusted.pem contains the needed certificates, i.e. the root certificate and the missing intermediate. To make it easier I have provided a pastebin with the all the certificates needed for this specific site. Just save it as trusted.pem.

In reply to Re: LWP::UserAgent certificate verify failed by noxxi
in thread LWP::UserAgent certificate verify failed by cormanaz

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.