IP Addresses to allow mail from

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  • 30-Aug-2017
  • 18-Sep-2018


Secure Messaging Gateway Cloud Service


Our local Firewall restricts SMTP to certain IP Addresses. What are the IP Addresses that need to be whitelisted on the firewall?


Here are the IP addresses that need to be allowed to connect to your Email Server and deliver mail:

These IP addresses must be able to connect to your SMTP Gateway to ensure successful Email delivery.