I signed up for Dyn Email Backup MX. Before I add the necessary MX record (mx2.mailhop.org) with my DNS provider I want to ask if I should make any changes to my Zimbra server.
I found this link Why am I not receiving email? - Dyn, but I'm not sure if and where to add this:
Anyone use Dyn Email Backup MX service?Range: IP Address / Netmask: Netblock:
18.104.22.168-22.214.171.124 126.96.36.199/255.255.254.0 188.8.131.52/23