Sandbox IPN Url (SSL Connect Error)

[hamzaavvan]

Well i'm working on a paypal project, so whenever i try to connect my ipn listenere via live url 
(https://ipnpb.paypal.com/cgi-bin/webscr) its working well and returning the response HTTP 200 and also return "VERIFIED" or "INVALID".

But when i change my ipn listener to its sandbox url (https://ipnpb.sandbox.paypal.com/cgi-bin/webscr) everything got **bleep**, no response just an error in my log file:

Curl Request failed: SSL connect error(35)

Please help me as i'm really confused with it, i tried searching everywhere but didn't get any appropriate answer.

Some valuable information of client server
TLS: TLS 1.2
OPENSSL: NSS/3.19.1 Basic ECC

[sharpiemarker]

For technical support: https://developer.paypal.com/support/

Those who can help you with this hang out there.

[hamzaavvan]

Thanks i found the solution.

[locoloco]

@hamzaavvan

Hey, what was the issue in the end? I'm seeing the same in my dev environment. Sandbox gives me this error:

error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure

Yet the live ipnbp server works. Any tips appreciated!