USG20 VPN - How can I set up the outbound traffic for mail to use the same IP address?

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a4g_inatl1
a4g_inatl1 Posts: 1

I am setting up a new mail server. One of the problems I am seeing is the server validates in and outbound traffic, which is good. I have a block of 8 IPs, 5 usable. Example: 12.34.56.57 to 12.34.56.61 usable IP's.

My mail server is configured on 12.34.56.58.

All outbound traffic goes through IP 12.34.56.57. This is causing a problem for my mail server.

Is there a way to bind outbound mail to use 12.34.56.58 instead of 12.34.56.57?

Here is an example of the message: "Cannot match your IP 12.34.56.57 against hostname mail.domain.com (DNS returned 121.34.56.58)"

TIA, Darryl.

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  • PeterUK
    PeterUK Posts: 2,850  Guru Member
    First Anniversary 10 Comments Friend Collector First Answer
    edited May 17
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    Yes make a routeing rule with

    incoming LAN

    source address 12.34.56.58

    nexthop WAN

    SNAT none

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