Email Notification not triggered via Jenkins in remote/cloud machine

Question

I have a small issue with respect to email notifications triggered via jenkins.

We have a SMTP server. Upon using this SMTP server in the jenkins configured in my local machine, email notifications are triggered successfully.

However, upon using the same SMTP server settings in the jenkins configured in one of my remote/cloud machine are failing to trigger email notifications.

Error Observed:

Failed to send out e-mail
java.net.ConnectException: Connection timed out: connect
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:286)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:231)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1900)

Can Anyone suggest me the solution to overcome this..!