Hi,
1. We have received this email from PayPal, do you think that it impacts us?
As part of our on-going commitment to provide a more robust service, Payflow will be introducing additional IP addresses to both the 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 ( https://www.paypal-knowledge.com/infocenter/index?page=content&id=FAQ1465&expand=true&locale=en_US ) of Payflow IP addresses to ensure that the appropriate IPs are configured in your firewall/proxy settings before mid-October 2017.
Please review our bulletin for additional information (including potential impacts) regarding this initiative. Any changes to the schedule will be updated on the bulletin.
Many Thanks.