question about port 53535 anti spam module

[Joe-ESET2016 0]

Hello, 

our Eset Mail Security 7.1.10009.0 with MS Exchange 2013 CU23 on Windows 2012 says: 

Spam Module not properly connected to Cloud

If I click the help link, it says:  https://support.eset.com/kb332/

Question:  do you need to allow outgoing UDP 53535 or incoming?  thx in advance!

 

To use the Antispam module:

View list of IP addresses in a text file

• Version 5 and higher: You need to allow requests to your local DNS server (TCP/UDP port 53).
• Base domain for DNS queries: e5.sk

• NOTE:

  Make sure to open UDP port 53535 for the addresses in the table below.