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Sophos Firewall Email Relay: Configure Exfil IP for SMTP traffic

Thomas Ward

I'm working on setting up a Sophos XG and would LOVE to use the Sophos XG's mail systems to be the 'exfil' mail server with a specific HELO name and a specific IP address on the system.

The system has multiple WAN IPs and because not all of them are properly set up with rDNS for mail to work properly, I need to make sure the XG doesn't try and send as the WAN interface IP but as one of its aliases.

Is there a mechanism to set this in the Sophos XG's email (relay/MTA) system for how it exfils to the Internet?



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  • 0

    Hi,

     please review the sd-wan functions. Sd-wan will allow you to direct traffic to the correct port. Sd-wan works in situations where you have multiple external interfaces active.

    Ian

    XG115W - v19.5.1 mr-1 - Home

    If a post solves your question please use the 'Verify Answer' button.



    Added additional notes about sd-wan and multiple interfaces
    [edited by: rfcat_vk at 6:38 AM (GMT -7) on 7 Oct 2022]
  • 0 in reply to rfcat_vk

    "not sure" is not an answer.  I would suggest that you avoid "not sure" answers, SD-WAN doesn't seem to give me the option to route based on the *application itself* on behalf of the firewall's SMTP functionality, so this might be a case of "something needs to be built properly" for this, or I just need to set up an SMTP relay on my network that's the smarthost *just* for XG's traffic.

  • 0 in reply to Thomas Ward

    Edited  the post as suggested.

    ian

    XG115W - v19.5.1 mr-1 - Home

    If a post solves your question please use the 'Verify Answer' button.

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