Starting Dovecot Imap: Warning: fd limit (ulimit -n) is lower than required under max

[prashantp786j]

Hi Friends,

One of our client getting these types of LFD messages :-

------------------
Starting Dovecot Imap: Warning: fd limit (ulimit -n) is lower than required under max. load (100 [ 1000), because of default_client_limit
[ OK ]
Starting Dovecot Imap: Warning: fd limit (ulimit -n) is lower than required under max. load (100 [ 1000), because of default_client_limit
Last died with error (see error log for more information): fcntl(F_GETFD, -1) failed: Bad file descriptor
[ OK ]
Starting Dovecot Imap: Warning: fd limit (ulimit -n) is lower than required under max. load (100 [ 1000), because of default_client_limit
Last died with error (see error log for more information): fcntl(F_GETFD, -1) failed: Bad file descriptor
[ OK ]
Starting Dovecot Imap: Warning: fd limit (ulimit -n) is lower than required under max. load (100 [ 1000), because of default_client_limit
Last died with error (see error log for more information): fcntl(F_GETFD, -1) failed: Bad file descriptor
[ OK ]

------------------

I have gone through different forums and post but couldn't get exact solutions on this.

While restart dovecot at first time I got an error like this :-

-----
-bash-4.1# service dovecot restart
Stopping Dovecot Imap: [FAILED]
Starting Dovecot Imap: Last died with error (see error log for more information): fcntl(F_GETFD, -1) failed: Bad file descriptor
[ OK ]
-----

After executing this command again it started ok.

Can you please let us know why such errors occurs?

P.S. At the file /etc/security/limits.conf there is an line for dovecot soft limit and hard limit which was set to 40000.

Please assist !!

 

[cPanelMichael]

Hello

Could you check to see if Shell Fork Bomb Protection is enabled in "WHM Home » Security Center » Shell Fork Bomb Protection"?

Thank you.

 

[tudorh]

Hello

Could you check to see if Shell Fork Bomb Protection is enabled in "WHM Home » Security Center » Shell Fork Bomb Protection"?

Thank you.

I notice there has been no reply to this. I'm in the same situation. I have Shell Fork Bomb Protection enabled.

What else should I check for?

 

[cPanelMichael]

Try disabling Shell Fork Bomb Protection and see if the issue persists.

Thank you.