В логах netup:
Mar 06 19:30:58 Info : dbefe700 RPC2Connection: [SSL]<cutted>Access granted to [SSL]<cutted> (UID: 5)
Mar 06 19:30:58 ERROR : dbefe700 RPC2Connection: [SSL]<cutted>SSL connection failed (4), system errno <0>
php -i | grep -i ssl
Registered Stream Socket Transports => tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
core SSL => supported
extended SSL => supported
openssl
OpenSSL support => enabled
OpenSSL Library Version => OpenSSL 1.1.1d 10 Sep 2019
OpenSSL Header Version => OpenSSL 1.1.1d 10 Sep 2019
Openssl default config => /usr/lib/ssl/openssl.cnf
openssl.cafile => no value => no value
openssl.capath => no value => no value
Native OpenSSL support => enabled
Возможно, что проблема в версии OpenSSL?