Eaton IPP does not send email (again)

I am unable to send email alerts from IPP? To be more correct, IPP thinks it has sent the email BUT it never arrives?

Following the previous thread of the same title I have tried a different Port (587). The Login, Password and SMTP server have all been verified. When I test the Action the IPP log reports the exercise with NO ERROR? However, no email arrives?

I have uninstalled the IPP software and re-installed. The problem still persists?

The UPS is an Eaton 9130 tower (Firmware Version 1.25) and the software is 1.61 release 158.

Thanks, Rick