@Bunnz said in "proxy handshake error"/"Failure when receiving data from the peer" when using proxy with Mail Module:
And proxy is working in HTTP request just fine
email ports are disallowed for these proxies.
Hello, I noticed that Get request does not use connected proxy network to request, it uses default network which exposes original IP address.

In this case, after connecting to proxy, I do a GET request to get my ip, instead of getting proxy IP, I get my original IP.
API service used: ip-api.com