Feature Request - Add proxies for email verification

[ashleykleynhans]

Now that email verification is rate limited, it would be great if you could add a feature where the mail server can read an optional config of proxies to get around the rate limit issue.

[drallieiv]

Until mail and core are united in a single service, implemeting proxies on both modules will still cause issues if the 2 modules share the same IPs. The 503 errors thrown by PTC fronts are shared for both creation and activation.

Currently, the creation with core has a server side limit of 5 accounts per 16 minutes, which makes around 20/h.
While the validation server has a limit of 6 per minute, which is around 360/hour

So unless you are using more then 18 IPs, the mail server is faster then the account are produced.

[ashleykleynhans]

Yeah, I'm using lots of IPs which is why I encountered this issue.