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What are the MailShield's IP addresses?

Atera recommends you create 3 rules in you Firewall;
Open incoming traffic (port 25) only from these ip addresses
 
  •  212.79.242.192/26 (mask = 255.255.255.192) (212.79.242.192-254
  •  212.79.238.64/26 (mask = 255.255.255.192) (212.79.238.66-126
  •  193.28.13.0/24 (mask = 255.255.255.0) (193.28.13.1-254)
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