Hello, I've inherited a plesk 8.6 server recently and in the past week it's been exhibiting slowness. It has around 300 websites on it and "top" has been showing me a lot of mail related activity (qmail, spamd, etc). Today I noticed there were 9000 mails in the queue. Usually a busy day sees around 100-200 mails in the queue at any given time. I started doing some digging on the forums here and have some questions about my findings. I ran /var/qmail/bin/qmail-qread and am seeing a lot of activity for non-existent email accounts that seem to follow a uniform naming convention. Here's a snippet: What's going on here? The 54-thampl user does not exist, neither do the other odd named users listed here.