Besides, we use @jar 's outbound network for sending, so let's go MXroute and let the others go home!

Wtf. Why I should introduce midleman into my infra? You go mxroute or go home.

* MXRoute

MXroute is registered in the US so they are subject to US jurisdiction regardless of where their servers are at. OP would need to sign up with a provider that is based outside of the US, like fastmail

MXroute @jar is usually this forums goto though I'm not sure about the non-US part as you typically can't choose which server you end up on.

* MXRoute @jar

* MXRoute

* Mxroute

Well, the proxy could rewrite the sender to some domain under OPs control. Then all that's left is having an outgoing proxy reverse the rewrite so replying will actually target the right addresses. Se

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Most Reliable: MXRoute

* MXRoute

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No, it will not work. There is no point to proxy that because you don't need to hide that IP, is not yours, it from the MXRoute.

As long as you MX records still point to the correct servers your mail should be fine. That means you can have cloudflare proxying your mxroute web panel but if your MX records point to mail.yourdomai

MyW does use MXRoute service ...

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MXRoute belongs to @jar

* Mxroute @jar