Symptoms
After updating to cpanel-exim-4.100, messages are stuck in the Exim queue and errors similar to the following are present in the Exim log.
# 2026-09-11 10:26:27 1x4y0b-0000000H6J0-2x5y Spool file 1x4y0b-0000000H6J0-2x5y-D not found
Cause
The messages are failing to send since the message has been moved to a different spool directory than Exim is expecting.
Resolution
cPanel does not provide MailScanner or MailScanner Front-End (MSFE) tools, and ConfigServer has been shut down. MailScanner and MSFE should be uninstalled. Please note that it may be necessary to work with your server's system's administrator to fully uninstall the software and restore emails.
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