Sendmail "queueup: cannot create queue temp file ...: No space left on device"
On one of our systems running sendmail, we periodically saw the following errors:
Mar 13 13:37:05 nvpmmsa801 sendmail: m2DIb56k020176: SYSERR(root): queueup: cannot create queue temp file ./tfm2DIb56k020176, uid=0: No space left on device
It turned out we ran out of inodes for our /var file system (df -i /var showed 100% usage). The host statistics gathered by sendmail via confHOST_STATUS_DIRECTORY were never purged with purgestat.