Unfortunately iVoox does not have a redirect tool, so we suggest you contact them through the following page: https://ivoox.zendesk.com/hc/es-es/requests/new
Here is an email template that you can use:
Hi iVoox Support,
I'm moving my podcast to a new host provider and kindly request that you apply a redirect for the following show (Insert Your iVoox Feed Here)
Can you please apply a 301 redirect to my new RSS.com feed at (insert your RSS feed here, for example: https://media.rss.com/myRSSfeed/feed.xml)
Please let me know if you need any more information
Thanks in advance.