Email Read timed out

Using Ignition Version: 8.1.36 (b2024010211), Perspective & Windows 11
I have configured email in Gateway, & successfully sent a test email to myself from gateway

Now I am trying to configure a button to send email onClick
My button Click code is (with names changed to protect the innocent!):

def runAction(self, event):
	stmp = "smtp.telstra.com:465:tls"
	fromAddr  = "someone@bigpond.net.au"
	subject  = "abc"
	body = "qwerty"
	to = "someoneElse@bigpond.net.au"
	
	system.net.sendEmail(stmp,fromAddr, subject, body, False, to   )

I get a "read timed out message:

com.inductiveautomation.ignition.common.script.JythonExecException
Traceback (most recent call last):
  File "<function:runAction>", line 17, in runAction
  nested exception is:
	java.net.SocketTimeoutException: Read timed out

javax.mail.MessagingException: javax.mail.MessagingException: Exception reading response;
  nested exception is:
	java.net.SocketTimeoutException: Read timed out

	caused by org.python.core.PyException
Traceback (most recent call last):
  File "<function:runAction>", line 17, in runAction
  nested exception is:
	java.net.SocketTimeoutException: Read timed out

javax.mail.MessagingException: javax.mail.MessagingException: Exception reading response;
  nested exception is:
	java.net.SocketTimeoutException: Read timed out

	caused by javax.mail.MessagingException
javax.mail.MessagingException: Exception reading response;
  nested exception is:
	java.net.SocketTimeoutException: Read timed out

	caused by SocketTimeoutException: Read timed out

Ignition v8.1.36 (b2024010211)
Java: Azul Systems, Inc. 17.0.8

There are many things in this world I don't understand. Now I don't understand why I get a "READ" error.
Can someone enlighten me please

If you're sending mail through an external SMTP server wouldn't you have to supply login details for authentication? I'm confused though; I don't think I've ever used system.net.sendEmail but I thought that you would use an Ignition email profile set on the gateway?

Tip: You've named your variable "stmp" instead of "smtp" (Simple Mail Transfer Protocol) - but you've been consistent so that's not the cause of your error.

Fixed now
I was not calling the function with parameters named correctly
Thanks for the help