I've decided to move martes.yaina.de to a rental machine. Not only that it's less expensive, it also has the advantage that someone else than me takes care of the hardware.
The new system is a 64-bit Linux, even though the current physical machine has only 2 GB of RAM, but I'm afraid that 32-bit Linux systems will cease to be available in the foreseeable future. This change required significantly more work than just restoring from the backup. I'd like to apologize for the longer downtime caused by it.
No e-mail arrived before the crash should be lost, however some e-mails may have bounced during the downtime. Everything should be working as before now, I hope. If not, please drop me a note.
The groupware / webmail system has been upgraded to the latest version as well to close some potential security (XSS) issues.