Contact Form 7 – PayPal Add-on

I have been getting this in an email. Is there anything I need to do other than update my plugin?

We announced earlier this year our plans to provide a more robust service by introducing additional IP addresses to the Payflow production and pilot environments. To minimize potential impact, we recommend that you use Domain Name Service (DNS) host names instead of hard-coding Payflow IP addresses.
However, if you must allow particular IP addresses through your firewall or proxy servers, please review our list of Payflow IP addresses to ensure that the appropriate IPs are configured in your firewall/proxy settings by January 10, 2018.
Please review our bulletin for additional information (including potential impacts) regarding this initiative. Any changes to the schedule will be updated on the bulletin.