Hi Timo-san, Tony-san,
Thank you very much for your comments. In the output of a 'lsof', I see a lot of the following messages.
dovecot-a 7346 root 10u sock
0,5 181268 can't identify protocol dovecot-a 7346 root 11u sock
0,5 277537 can't identify protocol
I found a quite similar issue posted at: http://www.mail-archive.com/dovecot@dovecot.org/msg07229.html
I would like to make sure if there is no way to avoid this issue without updating the dovecot package.
Sincerely,
Timo Sirainen wrote:
On Fri, 2010-03-26 at 11:15 -0400, Tony Rutherford wrote:
Run "lsof" or something similar to see what open filedescriptors there are. I ran into this same issue...and it had nothing to do with Dovecot...Dovecot was just unlucky enough to be requesting to open a file when the limit was already reached.
The error message for that situation is actually different:
Too many open files in system
vs.
Too many open files