It works on testing but in real case it does not

It works on testing but in real case it does not mageplaza.com

mageplaza.com

Please help us check the following points:

Make sure Developer mode is OFF.
Make sure you installed Mageplaza Core module and using its latest version
Make sure you are NOT using Port 25. If port 465, the protocol will be SSL; port 587 will be TLS.

If you still cannot resolve the issue, you can get help here

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