How to resolve Server Error '/' in Application in SmarterMail?

Sometimes, you will receive an error in SmarterMail after upgrading its version. This might occur because of the mismatched .Net frameworks' version. This article will guide you on how to resolve this "Server Error in '/' Application" error in SmarterMail in Windows VPS.

Server Error '/'  in Application in SmarterMail


To resolve this error kindly follow the below mentioned steps:


  1. Login to your VPS via RDP.

  2. Go to Start → Administrative Tools → Internet Information Services (IIS) Manager.

    Go to Application Pools and Select SmarterMail's Application Pool

  3. Expand your VPS hostname → select the Application Pools option.

  4. You need to set the .Net Framework version to 4.0 (Integrated) from 2.0 (Classic). Also mark the checkbox 'Start the application pool immediately' and click on OK.

    Change .Net Framework of SmarterMail's Application Pool


  5. This will resolve the error of SmarterMail, and will make the SmarterMail functioning as usual.

    Resolution of Error

  • 3 Users Found This Useful

Was this answer helpful?

Related Articles

How to add domain in SmarterMail manually?

Sometimes customers choose to order Windows VPS without any control panel. In this case, the...

What is double Opt-In email list?

You might hear us talk too much about double opt-in list in trouble tickets. You may not...

Unable to access SmarterMail web interface

The webmail interface of SmarterMail communicates with SmarterMail service by two different...

How to set up SmarterMail website in IIS server?

To setting up SmarterMail as an IIS website, you need following things to be installed in your...

Can I Monitor and Login To User's Account As SmarterMail Administrator?

Yes, you can monitor and login to user's mailboxes as SmarterMail administrator using Impersonate...