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Multipath

I have 2 ISP's hooked up to my UTM 220 running uplink balancing.

I'm trying to setup a multipath rule so that my outgoing e-mail will go out over my primary connection (ISP1). My multipath rule looks like this:

Source: Exchange, Service: SMTP, Destination Internet IPv4
Itf. Persistence - By interface
Bind Interface - ISP1 Interface

For some reason when I check an e-mail sent to my gmail it still shows the IP address of ISP2.

I've also tried a multipath rule of Any Source, Service SMTP, Destination Any Itf persistence by interface and bind to ISP1 and it doesn't seem to change anything.

What am I doing wrong?

What would be even better is if I could set it up to balance between both interfaces, but the SMTP hostname would change dependent on interface used (Hostname would be mail2 when using isp2 and mail when using isp1).

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0 BarryG over 9 years ago

Hi,

Are you using the SMTP proxy in the UTM?

Barry
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0 dtapley@holstein.ca over 9 years ago

I have simple SMTP proxy mode setup. For outgoing mail I have host based relaying setup with my exchange server identified as the host allowed to relay mail through the UTM
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0 dtapley@holstein.ca over 9 years ago

I just had a reply from Sophos support that they gave me wrong information in setting up a multipath rule.

I guess this question still stands:
What would be even better is if I could set it up to balance between both interfaces, but the SMTP hostname would change dependent on interface used (Hostname would be mail2 when using isp2 and mail when using isp1).
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