On Tue, 2007-10-23 at 13:16 -0400, Joe Allesi -X (joallesi - Coyote Creek Consulting at Cisco) wrote:
[version: dovecot-0.99.11-4.EL4.src.rpm]
We recently experienced an issue that prevented all new IMAP logins from occurring. Although it appears that it was due to running out of available system file descriptors, I'm still not sure what the true root cause was as I can't replicate the same error in our test environment. The system file descriptor max was set at (per
cat /proc/sys/fs/file-nr) 380081 , and we're averaging around 7,000 in use. It appears that the main issue was dovecot-auth, so does this appear to fall in line with the known PAM bug in this version?
Check what the open files are: ls -l /proc/pidof dovecot-auth/fd/
Although I don't recommend using v0.99 even if you can fix this problem.