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I can't upload or download files because I have an ISP or Firewall network connection block. what can be done?

Users who are connected to the Internet through an organization firewall or through Internet Service Providers that have a restricted internet connection which allowed browsing only authorized websites may encounter difficulty while using JUMBOmail site.
In order to be able to use our service without interruption, please contact your ISP or your organization's IT manager and verified the following addresses that are open for browsing from your computer:

For general use of the site, make sure that the following addresses are open:


To upload files properly, make sure that the following addresses are open:


To download files, make sure the following addresses are open:

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