I know this is an old post, but I was facing a similar issue as mldvx4. So for anybody stumbling on this:

You can use Dublin Core with RSS 2.0 feeds, if you modify the file V2_0.pm from the XML::RSS module (on my PC, it was at: /usr/local/share/perl/5.26.1/XML/RSS/Private/Output/V2_0.pm). You need to add the following line to the function "_out_item_2_0_tags":

$self->_out_dc_elements($item);

That's it!

In reply to Re^2: Using XML::RSS to produce an RSS 2.0 feed with Dates within Items by Anonymous Monk
in thread Using XML::RSS to produce an RSS 2.0 feed with Dates within Items by mldvx4

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