Mine was compromised and the script kiddie was using it to send spam.

Moved to static pages. He got mad. Started sending threatening emails.

Welp, there’s my Christmas budget… gone in one fell swoop. You might as well join… us… I think there is more than just me here… hello?

I was having that error and it was caused by a compose configuration. I had /tmp incorrectly mapped. Removed the map entirely. Started working again.