SMTP error - stream_socket_client()

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Hello, I (think that I) successfully installed passbolt on debian 12.
While I was at smtp configuration step there was a problem. I entered all of the informations about server and account, but when trying to sent a test email problem appeared:

Email could not be sent: stream_socket_client(): Unable to connect to tcp://10.22.11.22:465 (Connection refused)

I am attaching screenshot of the screen with this problem. Hope to get help from you :wink:

hey @mgorzkowski welcome to the forum!

For this issue are you running your own SMTP server or connecting to a service like o365/gmail?