Hi Gregg, > Recently I have noticed in the mail lot a lot of weird errors. > > dovecot: pop3-login: Can't connect to auth server at default: Too many open > files > dovecot: imap-login: socket(default) failed: Too many open files
I haven't seen this problem on any box yet, so I don't quite know why you're running into it. What does "lsof -nu dovecot|wc -l" report at the time of the error? That command shows how many files Dovecot has open. There is a hard OS limit that limits how many files any given process may hold open. That limit is 1024 files and is defined on a kernel level. Work around: $ cd /proc/sys/kernel $ echo "4096" >file-max $ echo "12288" >inode-max That increases the maximum number of open files to 4096. But inode-max also needs to be increased. As a rule of the thumb it should be 3-4x higher than "file-max". These changes are only temporary until the next reboot. Unless you stuff them into a server startup script that gets executed when the server starts. Alternatively a recompiled kernel can also fix this. In that case NR_FILE and NR_INODE in include/linux/fs.h need to be adjusted. But that shouldn't be necessary. -- With best regards Michael Stauber _______________________________________________ Blueonyx mailing list [email protected] http://www.blueonyx.it/mailman/listinfo/blueonyx
