Smtp ping failure

Hello
I wrote simple flask code that sends smtp pings.
The code works fine on my pc.
I uploaded it to free web app.
I get eof in response which means that the response did not received until timeout.
Does anyone has any idea why?
Will it suppose to help if I will upgrade the web app?

Hi,

Are you using the default SMTP Port, 25? AWS blocks that port.

Alan

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