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Proofpoint IP Addresses

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Revision as of 18:43, 26 August 2025 by Hbsadmin (talk | contribs) (Created page with "Go back to [https://wiki-stage.hbscloudservices.com/Proofpoint_Essentials Proofpoint Essentials guides] or [https://wiki-stage.hbscloudservices.com/Main_Page Main Page]. == Proofpoint Inbound Mail (to customer) == For SMTP Connections only. Must use port 25. IPv4 Subnets: * US Region: ** 208.56.1.0/25 ** 67.231.152.0/24 ** 67.231.153.0/24 ** 67.231.154.0/24 ** 67.231.155.0/24 ** 67.231.156.0/24 ** 67.231.144.0/24 ** 67.231.145.0/24 ** 67.231.146.0/24 ** 67.231.147.0/2...")
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Go back to Proofpoint Essentials guides or Main Page.

Proofpoint Inbound Mail (to customer)

For SMTP Connections only. Must use port 25.

IPv4 Subnets:

  • US Region:
    • 208.56.1.0/25
    • 67.231.152.0/24
    • 67.231.153.0/24
    • 67.231.154.0/24
    • 67.231.155.0/24
    • 67.231.156.0/24
    • 67.231.144.0/24
    • 67.231.145.0/24
    • 67.231.146.0/24
    • 67.231.147.0/24
    • 67.231.148.0/24
    • 67.231.149.0/24
    • 148.163.128.0/19

Proofpoint Essentials Email Archive

For IMAP Connections only. Must use port 993.

IPv4 Subnets:

  • US Region:
    • 34.192.199.2/32
    • 52.55.243.18/32
    • 52.54.85.198/32
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