[Kolab-devel] Kolab 2.1 - Possibile DOS?

[gelpi@corona.it]

Hi,
    too often my kolab 2.1 beta 3 installation stop working.
what happens is that during kolab daily cron activity some component 
shut down and does not restart or ldap stop responding.

The result is that mail server stops.

This night I forget my thunderbird open and polling every 5 minutes 6 
mailboxes.
At midnight kolab stop working with a message error of temporary lookup 
failure.
In postfix.sum  I found this lines:

        1   77F5C6C345: virtual_alias_maps map lookup problem for 
gelpi at mydomain.it
         1   dict_ldap_connect: Unable to bind to server 
ldap://127.0.0.1:389 as cn=nobody,cn=internal,dc=mydomain,dc=it: -1 
(Can't contact LDAP server)
  pickup (total: 1)
         1   maildrop/77FA76C33B: Error writing message file
  postfix-script (total: 30)

In the lines above I change the real domain.

The solution is to restart kolab with /kolab/etc/rc all restart

I try to cron the last command at 1 o'clock, but if there is a client 
open it simply stop kolab.

This problem aries upgrading from beta 1 to beta 2. I upgrade to beta 3 
but this does not resolve it.

I'll upgrade to beta 4 as soon as possible.

I add also this information. My sasl log is full of lines

<debug> saslauthd[14596]: ldap_simple_bind() failed -1 (Can't contact LDAP server).
 <info> saslauthd[14596]: Retrying authentication
 <debug> saslauthd[14596]: ldap_simple_bind() failed -1 (Can't contact LDAP server).
 <info> saslauthd[14596]: Retrying authentication
 <debug> saslauthd[14588]: ldap_simple_bind() failed -1 (Can't contact LDAP server).
 <info> saslauthd[14588]: Retrying authentication
 <debug> saslauthd[14588]: ldap_simple_bind() failed -1 (Can't contact LDAP server).
 <info> saslauthd[14588]: Retrying authentication
 <debug> saslauthd[14596]: ldap_simple_bind() failed -1 (Can't contact LDAP server).
 <info> saslauthd[14596]: Retrying authentication

I install kolab one year ago using the december 15 snapshot. After that I upgrade to beta 1, then to beta 2 and to beta 3.

I urgently need some help to investigate this problem and find a solution.


Thanks

-- 
Gelpi ing. Andrea
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