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question about port 53535 anti spam module

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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.


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