Lot of connections from mta to ldap

[mnbvmnbv]

Hi
I have a serious problem.

I have a zimbra multi server(2 ldaps, 2 mtas, 1 mailbox) for 7000 accounts and now the server is really slow.

I'm watching the process of the cpu and slapd is overloaded. I'm looking the connections of the ldap's servers

tcp        0      0 zldap0:ldap                 zmb0:55837                  TIME_WAIT   -                   
tcp        0      0 zldap0:ldap                 zmta1:36363                 ESTABLISHED 22433/slapd         
tcp      394      0 zldap0:ldap                 zmta1:55398                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:55397                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:55401                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:55671                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:47947                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmb0:55879                  ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmb0:55874                  ESTABLISHED 22433/slapd         
tcp      114      0 zldap0:ldap                 zmb0:55881                  ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:36955                 ESTABLISHED 22433/slapd         
tcp      110      0 zldap0:ldap                 zmb0:55882                  ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:55204                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:44452                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:56242                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmb0:48784                  ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:36745                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:44439                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:36759                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:44441                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta1:55758                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:37684                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:55358                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:55359                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:36664                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:55321                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:55323                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zldap1:47966                ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:36684                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:55372                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:40525                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:36681                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:38986                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:35261                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:40635                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:36481                 ESTABLISHED 22433/slapd         
tcp        0      0 zldap0:ldap                 zmta0:51660                 ESTABLISHED 22433/slapd

This output of the netstat of the ldap0

The output of the netstat of the ldap1 is:

tcp        0      0 zldap1:47966                zldap0:ldap                ESTABLISHED 9845/slapd 

tcp        0      0 zldap1:ldap                 *:*                         LISTEN      9845/slapd

Any body know where can I find the problem???

Its very strange

Best regards, thanks