[Python] Sending mail with python and roundcube

I am trying to send mail with python using my rouncube webmail but when i run it outputs this error TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

I checked in my mail and my port is "290" which have provided but when i run the function the mail doesn't send. I know how to send with gmail by turning on less secure app access but don't know how to work around to send with my webmail.

I need your suggestion to work around it.

from smtplib import SMTP_SSL as SMTP
import logging, logging.handlers, sys
from email.mime.text import MIMEText



def send_message():
text = '''
Hello,

Trying to send mail from my webmail in python 3.

Sincerely,

My name
'''

message = MIMEText(text, 'plain')
message['Subject'] = "Email Subject"
my_email = 'joe@mycompany.com'

# Email that you want to send a message
message['To'] = my_email

# You need to change here, depending on the email that you use.
# For example, Gmail and Yahoo have different smtp. You need to know what it is.
connection = SMTP('smtp.roundcube.com', 290)
connection.set_debuglevel(True)

# Attention: You can't put for example: 'your_address@email.com'.
# You need to put only the address. In this case, 'your_address'.
connection.login('fred.kings', 'fredsw321a')

try:
# sendemail(<from address>, <to address>, <message>)
connection.sendmail(my_email, my_email, message.as_string())
finally:
connection.close()



send_message()

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