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Allow external public IP Address to access to SMTP relay

Hello,

I come from Sophos UTM, now I am configuring an XGS series.

I need to allow an external public IP address to access to SMTP replay. I tried to add the IP to Replay Settings - Allow relay from hosts/networks but it does not work. It seems that the only way to allow external IP is to enable SMTP replay for WAN interface in ADMINISTRATION - SMTP Relay, but in this way all external IP address are enabled.

Any ideas?

Thanks!



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  • Thank you

    I discovered that enabling SMTP for WAF it is pubblically visible by all IP address through 25 port. Only "Allow relay from hosts" IP can send email, but I don't like to let my SMTP relay to be visible...

    I contacted support, and it seems that there is no way to get what I want ...

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