[Dovecot] Auth Issues - Urgent - Help!

[David Cunningham]

Here is my dovecot -n:

# 1.1.3: /etc/dovecot.conf
log_path: /var/log/dovecot
info_log_path: /var/log/dovecot-info
login_dir: /var/run/dovecot/login
login_executable(default): /usr/libexec/dovecot/imap-login
login_executable(imap): /usr/libexec/dovecot/imap-login
login_executable(pop3): /usr/libexec/dovecot/pop3-login
login_greeting: MECnet Mail System, Authorized Use Only, Please Log In.
login_process_per_connection: no
login_process_size: 1024
login_max_processes_count: 1024
login_max_connections: 1024
max_mail_processes: 50000
verbose_proctitle: yes
first_valid_uid: 50
mail_uid: 93
mail_gid: 12
mail_location: maildir:/var/spool/maildirs/%d/%n/Maildir
mail_executable(default): /usr/libexec/dovecot/imap
mail_executable(imap): /usr/libexec/dovecot/imap
mail_executable(pop3): /usr/libexec/dovecot/pop3
mail_process_size: 1024
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(pop3):
mail_plugin_dir(default): /usr/lib64/dovecot/imap
mail_plugin_dir(imap): /usr/lib64/dovecot/imap
mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3
namespace:
   type: private
   prefix: INBOX.
   inbox: yes
   list: yes
   subscriptions: yes
auth default:
   verbose: yes
   passdb:
     driver: ldap
     args: /etc/dovecot-ldap.conf
plugin:
   quota: maildir



My buddy and I found

#define DB_LDAP_MAX_QUEUE_SIZE 1024

in the db-ldap.h file in the source.

We believe we hitting this threshold for some reason.  So, we are  
looking to increase this to 8192.  However, when trying to build the  
RPM source from atrpms, I get this:

# rpmbuild -ba dovecot.spec
error: line 1: Unknown tag: %bcond_without inotify

Any help?

Dave

Quoting Jurvis LaSalle <lasalle at idi.harvard.edu>:

>
> On Oct 8, 2008, at 8:01 AM, David Cunningham wrote:
>
>>
>> After a few hours of running, I get tons of the following errors in  
>>   my logs:
>>
>> dovecot: Oct 08 07:41:50 Error: auth(default):    
>> ldap(user at domain,x.x.x.x): Request queue is full
>>
>> I removed the username and IP, obviously.
>>
>> Any idea how to stop this?
>>
>> I have about 5 Thousand users using horde that login ever 1-5    
>> minutes to refresh their page.  I assume it is a setting, but I am   
>>  confused as to why it doesn't happen almost right away.  It seems   
>> to  take some time to build up.
>>
>> Please help!  This is taking my webmail system down hourly.
>
>
> dovecot -n?
>
> Hunch is login_max_processes_count is too low.
> http://wiki.dovecot.org/LoginProcess
>
> hth,
> JL