Probably runing 9.705-3 in a VM

Went to logon and got the below

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at admin to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

Filesystems have free space

smtp-2:/root # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda6 5.2G 3.1G 1.9G 62% /
udev 498M 64K 498M 1% /dev
tmpfs 498M 64K 498M 1% /dev/shm
/dev/sda1 331M 16M 295M 5% /boot
/dev/sda5 47G 16G 29G 35% /var/storage
/dev/sda7 61G 494M 57G 1% /var/log
/dev/sda8 2.8G 8.0M 2.6G 1% /tmp
/dev 498M 64K 498M 1% /var/storage/chroot-clientlessvpn/dev
tmpfs 498M 0 498M 0% /var/sec/chroot-httpd/dev/shm
/dev 498M 64K 498M 1% /var/sec/chroot-openvpn/dev
/dev 498M 64K 498M 1% /var/sec/chroot-ppp/dev
/dev 498M 64K 498M 1% /var/sec/chroot-pppoe/dev
/dev 498M 64K 498M 1% /var/sec/chroot-pptp/dev
/dev 498M 64K 498M 1% /var/sec/chroot-pptpc/dev
/dev 498M 64K 498M 1% /var/sec/chroot-restd/dev
tmpfs 498M 0 498M 0% /var/storage/chroot-reverseproxy/dev/shm
/var/storage/chroot-smtp/spool 47G 16G 29G 35% /var/sec/chroot-httpd/var/spx/spool
/var/storage/chroot-smtp/spx 47G 16G 29G 35% /var/sec/chroot-httpd/var/spx/public/images/spx
tmpfs 498M 96K 498M 1% /var/storage/chroot-smtp/tmp/ram

already tried a reboot, no improvement

nothing stands out in the httpd.log https://pastebin.com/naaSgfP3 192.168.53.165 is the internal endpoint used to connect.

email is flowing through the UTM