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SophosXG v19 ((home) - redirect Mail requests to an external (open source) secure mail gateway

Hello Community,

if upgrade to SophosXG v19 (Home Edition) and it takes a view minutes, but is was well done.
now i would like to scan/monitor the form/to sender and the definition of "white/gray/black" listet mails that are coming trough SophosXG
I've no internal Mailserver and no Sophos Central in place. An SSL Certifikate from my external FQDN can be served for this solution,

My challange
How to configure SophosXG to redirect all out-/ingoing requests trough the mail ports in the 1st steop to my SMG in the extranet to filter the mail traffic ? My Client connection is always established from the LAN to the WAN when the client is running. There is no DNAT in place.

Does anyone here have an idea how/if to configure this in the SophosXG


Thanks to all in advance.



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  • If you have XG configured in MTA mode try Email > General settings > Smarthost settings

    This will send outgoing mail to an external relay server.

     
    SFVH (SFOS 20.0.0 GA-Build222) - Last (re)boot on November 6th  2023
    Asus H410i-plus - Pentium 6605 Gold - 250GB M.2 PCIe NVMe SSD - 8GB - 3 ports
    [If any of my posts are helpful to you please use the 'Verify Answer' link]
  • Hello Peter,
    thank you very much for your quick reply. If I configure MTA mode on my XG, can I send all, outgoing mail traffic through a relay server (in my administration) that will scan the mail for example and make sure there are no malicious attachments / link in it?
    if the mail is clean, i want to relay the mail to the actual hoster of the mailboxes so that the mail is allowed to send out to the receipion?

  • When you configure you're XG in MTA mode it will scan your outgoing mail. It will then send it to the configured relay server.

     
    SFVH (SFOS 20.0.0 GA-Build222) - Last (re)boot on November 6th  2023
    Asus H410i-plus - Pentium 6605 Gold - 250GB M.2 PCIe NVMe SSD - 8GB - 3 ports
    [If any of my posts are helpful to you please use the 'Verify Answer' link]
Reply
  • When you configure you're XG in MTA mode it will scan your outgoing mail. It will then send it to the configured relay server.

     
    SFVH (SFOS 20.0.0 GA-Build222) - Last (re)boot on November 6th  2023
    Asus H410i-plus - Pentium 6605 Gold - 250GB M.2 PCIe NVMe SSD - 8GB - 3 ports
    [If any of my posts are helpful to you please use the 'Verify Answer' link]
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