ovirt-ha-broker giving error "File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/broker/notifications.py", line 29, in send_email timeout=float(cfg["smtp-timeout"]))"

Issue

• ovirt-ha-broker service giving following error in broker.log

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/ovirt_hosted_engine_ha/broker/notifications.py", line 29, in send_email
    timeout=float(cfg["smtp-timeout"]))
  File "/usr/lib64/python3.6/smtplib.py", line 251, in __init__
    (code, msg) = self.connect(host, port)
  File "/usr/lib64/python3.6/smtplib.py", line 336, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/lib64/python3.6/smtplib.py", line 307, in _get_socket
    self.source_address)
  File "/usr/lib64/python3.6/socket.py", line 724, in create_connection
    raise err
  File "/usr/lib64/python3.6/socket.py", line 713, in create_connection
    sock.connect(sa)
socket.timeout: timed out