From what I understand here:
Consequently, Mercado Pago will require that your connections to the
domains link and
link be through the protocol of
TLS encryption 1.1 or higher as of June 30, 2018.
the change only affects you if you have a payment form integrated in the site. Payment buttons and redirections would have no problems.
To confirm that you will not have problems:
-
Use https on your site
-
Confirm that the connection uses the TLS 1.1 or 1.2 protocol. From chrome, f12 to open the devtools console and in the security tab shows you that information:
On my server I support TLS 1, 1.1 and 1.2
In case the connection is TLS 1.0 you should modify the configuration of your server (depending on whether it is nginx or apache will be different) to support TLS 1.1 and 1.2
Nginx: link (sorry for the self-promotion, I already did it at the time and documented it there)
Apache: link
UPDATE:
Joel is right, we also have to validate that the TLS version used by the app that communicates with MercadoPago is 1.1 or 1.2.