Alerts are not getting generated in PI 7.31

Hi Experts,

We have configured the alert configuration according to the below mentioned blog, however we are not getting any alert mails for the messages failed in AE for communication channel errors.

http://scn.sap.com/community/pi-and-soa-middleware/blog/2012/12/27/component-based-message-alerting-on-as-abap

We tried the classical Alert Framework configuration too, the same issue, not able to get the alert mails and alerts itself not getting generated.

Checked most of the threads and blogs on alert issues, however yet to fix the issue.

p.s:We tried with RSALERTTEST report and alert category working fine, received alert in email notification.

Thanks & Regards,

Akhila A