[Dovecot] ldap_search() failed "Server Busy"

[Timo Sirainen]

On Thu, 2009-06-04 at 22:23 +0200, Paul Carter-Brown wrote:

> We are using dovecot 1.1.11 on Solaris 10u6. Under load, we are
> experiencing the following errors:
> 
> Jun  4 18:30:59 ug1s02-zone1 dovecot: [ID 107833 mail.error]
> auth(default): ldap(0202934816 at ug.smilecoms.com,10.31.3.13):
> ldap_search() failed (filter (uid=0202934816 at ug.smilecoms.com)): Server
> is busy

This error message is returned by LDAP server. See if there is any
configuration related to this on server side.

> We are authenticating against sun directory server yet see no errors in
> the directory server and it seems to be under low load. Any ideas if
> there is something on dovecot we should tune to erradicate this?

You could try if increasing auth process count helps (but that could
also break startup in some setups):

auth default {
  ..
  count = 5
}
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