Required software development freelancer for Postfix, dovecot JS expert wanted! job

Currently we have an own email client integrated into our own JS cloud based app which is connected to our own mail server which is using postfix, dovecot running on Ubuntu server.
We are facing currently sometimes "loading issues" within the email client which we cannot explain.
It is like the email client is loading endlessly and is not displaying any emails.

The task is to find out what exactly is causing the issue.

Various reasons can cause this issue and we would need to fix it with your expertise in Postfix, Dovecot and JS.

Don't hesitate to ask questions if something is unclear.

Best regards and a successful week

Skills & Expertise Required

software development