There are 2 Web Applications 1) Organization web app; 2) MySite web app.
Users are able to successfully subscribe Alert Me's and receive email notification from both Web Applications.
Email notification is received on the MySite web app when changes occur on announcements, lists and document libraries.
However, no email notification is received on the organization web app when changes occur on any announcement, list or library.
Both web apps use the same WFE, SMTP and Index servers.
I have cleared the Timer Cache and executed the STS ADM commands.
I am perplexed as to why the Alert Me’s work correctly on one web app and not the other when they are both using the same WFE, SMTP and Index servers.
Any ideas from the experts?