SMTP - Can't send mail

Permalink March 15, 2020 at 10:48 AM

Hi,

Since somedays I can't receive emails from my forms.
I didn't change anything in setting, but when I want to test mail settings I've got:

The following error was found while trying to send the test email:<br />stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:<br />
error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert protocol version

I don't know why. I'm using External SMTP Server, Ubuntu 16.04 and OpenSSL version is 1.0.2g .
I used this script:

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.howsmyssl.com/a/check");
curl_setopt($ch, CURLOPT_SSLVERSION, 6);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
$tlsVer = json_decode($response, true);
echo "<h1>Your TSL version is: <u>" . ( $tlsVer['tls_version'] ? $tlsVer['tls_version'] : 'no TLS support' ) . "</u></h1>";