What Happened to Email?
In version 5.2.3 we made significant updates to the email client, addressing issues with Linux systems and multi-tenant environments. The email client initially used a single loop, which caused issues with stability and multi-tenant functionality - a problem with one email server affected all domains. The solution was to switch to a multi-threaded client, but this introduced its own challenges, especially with the STARTTLS command during the switch between unencrypted and encrypted traffic. After a second build to fix these issues, the email client is now more reliable, with fast, independent email delivery for each tenant. If you upgraded before June 28, we recommend reapplying the upgrade to ensure all the fixes are in place.












