We tried, but could not find /doku.php?id=doku.php.faq:troubleshooting:citserver_crashes_when_running_on_debian_linux_when_sending_out_internet_email._fix&do=login§ok=455f72f177e387fa8410dc71e0150a72
But hey, you don't have to leave empty handed!
Here are some things you can try instead: