Can’t connect to host “ssl://localhost:993” on Cyberpanel

When working with CyberPanel, you may encounter the error when you try to access snappymail : Server Message “Can’t connect to host ‘ssl://localhost:993′”. This error typically occurs due to a misconfiguration in your server’s network settings.

Specifically, the issue often lies in one of two critical files: /etc/hosts or /etc/resolv.conf. Below, we’ll walk you through the steps to resolve this error by checking and correcting the configurations in these files.

Step 1: Check and Configure the /etc/hosts File #

The /etc/hosts file maps hostnames to IP addresses on your local machine. If this file is misconfigured, your server may fail to resolve localhost correctly, leading to the error.

1. Access Your Server via SSH
   Use an SSH client (e.g., PuTTY or Terminal) to log in to your server.
2. Open the /etc/hosts File
   Use a text editor like nano or vim to open the file: sudo nano /etc/hosts
3. Verify the Configuration
   Ensure the file contains the following line: 127.0.0.1 localhost or your server.domain.com If this line is missing or incorrect, add or modify it as shown above.
4. Save and Exit
   Save the changes and exit the editor. In nano, you can do this by pressing CTRL + X, then Y, and Enter.
5. Final Output should be something similar to attached image.

Step 2: Check and Configure the /etc/resolv.conf File #

The /etc/resolv.conf file contains DNS resolver information. If this file is misconfigured, your server may fail to resolve domain names, including localhost.

1. Open the /etc/resolv.conf File
   Use a text editor to open the file: nano /etc/resolv.conf
2. Add a Public DNS Server
   To ensure proper DNS resolution, add a public DNS server like Google’s: nameserver 8.8.8.8 , nameserver 8.8.4.4 or Cloudflare nameserver 1.1.1.1 If the file already contains other nameserver entries, you can replace them .
3. Save and Exit
   Save the changes and exit the editor.
4. Final Output should be something similar to attached image.

Step 3: Verify the Fix #

After making the above changes, restart dovecot and check if the error is resolved. If the configurations were correct, the error “Can’t connect to host ‘ssl://localhost:993′” should no longer occur.

Access Snappymail.

#

By following these steps, you should be able to resolve the “Can’t connect to host ‘ssl://localhost:993′” error in CyberPanel.

That’s all. Happy Hosting.