Send SMTP Mail Message: 5.7.0 Must issue a STARTTLS command first

I’m having issue with smtp. Well, is there anything wrong in the properties of the smtp?
These are the properties of the STMP and the error of it.
Annotation 2020-06-17 164836 Annotation 2020-06-17 164859

Can you try changing the port number as per the below topic @lyjun550

Thank you for the info. But I try to switch the SecureConnection to auto, it works for me now.

Other than that, can I know if i wanna use the company e-mail as the sender, should I change the Port Number or Server.
For example,
I just have to change the middle one?
But, it dont work for me, can you please help me explain this?


That need not be the exact company name, it should be a different format, you can check that with your IT people or with your manager so that you can get to know the actual server smtp of your organization

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