Can't generate an SSL certificate

Trying to generate an SSL certificate to use POPS or IMAPS, but can't

error is

C:\ManageEngine\ServiceDeskPlus-MSP>jre\bin\java -cp lib\cert.jar InstallCert sd.delaem-dela.com:80
Loading KeyStore C:\ManageEngine\ServiceDeskPlus-MSP\jre\lib\security\cacerts...
Opening connection to sd.delaem-dela.com:80...
Starting SSL handshake...
Exception in thread "main" java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(Unknown Source)
at com.sun.net.ssl.internal.ssl.InputRecord.readFully(Unknown Source)
at com.sun.net.ssl.internal.ssl.InputRecord.read(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at InstallCert.main(InstallCert.java:87)