Jitsi Setup on Ubuntu VPS & SMTP Fix

I need an experienced professional to set up a stable release of Jitsi on my Ubuntu VPS. The Jitsi instance needs to be configured on different ports to avoid interference with my CyberPanel. In addition to this, my CyberPanel SMTP server is not functioning and I need assistance in fixing it so I can send emails.

Key Tasks:
- Install stable release of Jitsi
- Configure Jitsi on different ports
- Troubleshoot and fix CyberPanel SMTP server

Ideal Skills:
- Extensive experience with Jitsi and Ubuntu VPS
- Strong understanding of CyberPanel
- Proficient in troubleshooting SMTP issues
- Good knowledge of Linux command line