Need list of allowable IPs for JotForm

I have a firewall that is locked down and we are trying to use Jotform to deliver files via FTP to an FTP server behind the firewall. 

IT needs a list of IPs to allow from Jotform to maintain security thru the firewall. 

We have tested FTP thru Jotform to our FTP server with an open connection successfully, but are hit and miss with the whitelisted IPs we found on one of your forum posts.

Can you please supply use with a good list of whitelistable IPs that Jotform uses for their FTP transfers?

thank you

We do have a list of IP addresses, mail servers and domain names. Please refer to this user guide: https://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses.

Hope that helps. Thank you.