habibzain Just husband, father and enthusiastic men about System Administration. Love to write short article about it. Perhaps can help and be useful for others.

Zimbra Unable to start TLS: SSL connect attempt failed error

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Zimbra-Unable-to-start-TLS

Hi Guys, today, I get an error on my zimbra server. Zimbra Unable to start TLS. My zimbra version 8.8.12. Zimbra service does not start with the “zmcontrol start” command. I get this TLS error message after changing an inappropriate date.

detail error message is :

Host mail.mydomain.web.id
      Starting ldap...Done.
Unable to start TLS: SSL connect attempt failed error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed when connecting to ldap master.

The result of googling I found was the zimbra forum.
https://forums.zimbra.org/viewtopic.php?t=65875

I get 2 conclusions :

  1. Disable SSLv3 (wiki link).
  2. Change ldap_starttls parameter setting.

I didn’t choose option 1, because in the future if I select option 1 with disable SSLv3, I don’t know my user who has accessed my zimbra server with a variety of devices. I’m afraid if SSLv3 is disabled it will affect SSL compatibility in the mail client.
finally I decided for the second option, which is to edit the ldap_starttls parameter.
I run the command below:

root@mail ~# su - zimbra
Last login: Tue Jul 16 14:23:39 WIB 2019 on pts / 0

zimbra@mail ~ $ zmlocalconfig -e ldap_starttls_required = false
zimbra@mail ~ $ zmlocalconfig -e ldap_starttls_supported = 0

After running the zommand. run zmcontrol start again.

Zimbra-Unable-to-start-TLS ssl3_get_server_certificate
See also  PFDel Script Delete Mail Queue Postfix and Zimbra
habibzain Just husband, father and enthusiastic men about System Administration. Love to write short article about it. Perhaps can help and be useful for others.

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