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 whitelist email address/domain in SmarterMail?

SmarterMail allows you to whitelist the email addresses or entire domain, bypassing all spam...

How to Check Disk Usage of Mail Domain in SmarterMail?

Mail domain disk space report will help you to identify those users who are using the most disk...

How to set Email Throttling from SmarterMail?

Email throttling allows system administrators to limit the number of emails transmitted from...

Can I Access SmarterMail using my Sub-domain?

Yes, you can access the SmarterMail of your VPS through the sub-domain like...