@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.
Please give a solution. how can i solve this problem.

@ashikahsan said in I need Solve OpenSSL/3.0.11: error:0A000152:SSL routines::unsafe legacy renegotiation disabled:
Please give a solution. how can i solve this problem.
Try using this module
https://community.bablosoft.com/topic/23348/curlimpersonate-http-client