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Last update: 2022-06-23

Sophos Mailflow IP addresses

This page is for Sophos Mailflow only. For domain and IP address information for Sophos Gateway, see Sophos Gateway email domains .

When you integrate Sophos Mailflow with Microsoft 365 (formerly Office 365) the connections are set up automatically.

If your Sophos Mailflow configuration changes, use these IP addresses for the connectors to reset your configuration.

Using an IP address other than the one specified for your region prevents mail from flowing correctly.

Sophos Mailflow uses two Microsoft 365 connectors:

  1. An inbound connector that receives inbound emails from Sophos.
  2. An inbound connector that receives outbound emails from Sophos.

Copy the IP addresses for your region and use them for the correct connector.

Region Inbound emails Outbound emails
US (West) 198.154.181.192/27 198.154.181.224/27
US (East) 103.246.251.192/27 103.246.251.224/27
Germany 94.140.18.192/27 94.140.18.224/27
Ireland 198.154.180.192/27 198.154.180.224/27
Canada 85.113.88.192/27 85.113.88.224/27
Australia 192.175.3.192/27 192.175.3.224/27
Japan 198.160.151.192/27 198.160.151.224/27
India 159.112.232.192/27 159.112.232.224/27
Brazil 64.69.223.192/27 64.69.223.224/27
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