Unable to receive email from XIBO CMS v2R203

Recently installed v 2R205 on a new server. However, I am unable to receive emails for devices dropping offline or when they are recovered. The maintenance settings
Here is what I have in the config

In Administration–> Maintenance, the time out was set to 1 minute and unplugging power from the DSCS9 boxes did not result in a email being sent

The Notification Centre shows the notifications for display offline and recovery, the user has email notification enabled, but no email is received by the user.

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