Consider the following scenario:
- You are using Microsoft SQL Server 2012 Reporting Services (SSRS 2012) or SQL Server 2014 Reporting Services (SSRS 2014).
- You run the Data-Driven subscription that is set to use the e-mail delivery extension.
- The e-mail notification delivery fails because of some reasons such as e-mail system issue or non-existed SMTP server.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.