UPS Network Management Card 2 - Test e-mail failed

[AdamTyler]

I've been fighting with a new smaller UPS and the SMTP configuration. We have quite a few APC devices in our organization which use the "UPS Network Management Card 3" and operate just fine. Settings are exactly the same.

This new UPS we purchased for a small network closet refuses to work. See attached screenshot for error output when testing. I've attempted to update firmware, no joy. Opened a support case with APC, they can't seem to solve it.

Smart-UPS 500 | SCL500RM1UNC

Current firmware info:

APC OS (AOS)
Name
aos
Version
v7.0.8
Date
May 27 2022

[AdamTyler]

Firmware info from the UPS that is working just fine with exact same SMTP settings...

UPS Network Management Card 3

APC OS (AOS)
Name
aos
Version
v1.5.1.1
Date
Jun 01 2021
Time
20:24:35