After logging into the Aria Operations admin UI and browsing to:
Administrator Settings >> Password Recovery Settings
The TEST button reports "Successfully connected to SMTP server" but no email is received by the configured email address.
Aria Operations 8.x
The TEST button does not send a full email as a test, it instead issues an SMTP EHLO command to the configured mail server to confirm that it is communicating with a SMTP server.
If the TEST button reports "Successfully connected to SMTP server":
Administrator Settings >> Password Recovery Settings page.