Ajcody-Notes-SSLCerts

- This article is NOT official Zimbra documentation. It is a user contribution and may include unsupported customizations, references, suggestions, or information.

SSL Certificate Issues

Actual SSL Certificate Issues Homepage

Please see Ajcody-Notes-SSLCerts

Resources For SSL Certificates

• General
  • 5.x_Commercial_Certificates_Guide
  • Commercial_Certificate_in_5.x
  • 4.x_Commercial_Certificates_Guide
  • Administration_Console_and_CLI_Certificate_Tools
• Trouble Shooting
  • Cannot_install_a_Commercial_Certificate_in_Zimbra_5.0
  • Private_key_and_certificate_mismatch
  • Recreate Self-Signed SSL Certs
    • I believe this wiki page has the best instructions. Sorry for the confusion about the state of the wiki pages on ssl certs. We are attempting to get them cleaned up.
      • Problem_with_Certificate_can_cause_MTA_Failure#For_Multi-Server:_Run_this_on_all_other_systems_in_the_multi-server_setup
    • Zmcertinstall#Single-Node_Self-Signed_Certificate
      • Has "Multi-Node Self-Signed Certificate" instructions as well.
    • Recreating_a_Self-Signed_SSL_Certificate
  • 4.5.x_to_5.0.x_Certificate_Upgrade_Issues
  • Failed_to_create_jetty.pkcs12
  • LDAP/Nginx_won't_start_and_asks_for_a_password
  • Problem_with_Certificate_can_cause_MTA_Failure
  • Unable_to_get_issuer_certificate
• Specific Cert Wiki Pages:
  • Installing_a_GoDaddy_Commercial_Certificate
  • Installing_a_GeoTrust_Commercial_Certificate
  • Installing_a_Network_Solutions_Certificate_on_ZCS_5.0.x
  • Installing_a_Comodo_SSL_Certificate_on_ZCS_5.0.x
  • Installing_a_Thawte_SSL_Certificate_on_ZCS_5.0.x
  • Installing_a_Verisign_Test_Certificate

Bug & RFE's Related To SSL

• "multiple SSL certificates on one server"
  • http://bugzilla.zimbra.com/show_bug.cgi?id=8128
    • Allot of private comment details unfortunately.

Commercial Cert Error - Subject Does Not Start With /

As reported by a customer to me:

When creating a commercial cert for a server the zmcertmgr will fail if you don't supply a subjectAltName ---- Took me awhile to figure this out since the error isn't correctly describing the problem. It says that "Subject does not start with '/'." Which is incorrect. Subject does start with "/" , it's the subjectAltName that was needed. After I supplied this name, it generated the csr. Here are my commands for your own reference.

I modified the Some* entries below.

/opt/zimbra/bin/zmcertmgr createcsr comm -new -subject "/C=US/ST=SomeState/L=SomeCity/O=Some Community College/OU=ITS/CN=zimbra.somecommunitycollege.edu" -subjectAltNames zimbra.somecommunitycollege.edu

then I went to thawte and applied for a ssl cert.

How To Setup Certs With CACert.org - Free Certs

CaCert.Org References

Free Certs with http://www.cacert.org/

How-To (tested on 5.0.2)

Note, the following :

su - root ; cd /opt/zimbra/ssl/zimbra/commercial/

included in all steps in case someone is skipping through instructions.

Clean up and start fresh

su - root
cd /opt/zimbra/ssl/zimbra/commercial/
tar -czvf /tmp/ssl.commercial.backup.tar.gz *
rm -rf *

Generate new csr

[ su - root ; cd /opt/zimbra/ssl/zimbra/commercial/ ]
/opt/zimbra/bin/zmcertmgr createcsr comm -new

This uses the defaults, note the items to change.

/opt/zimbra/bin/zmcertmgr createcsr comm -new "/C=US/ST=TX/L=Somewhere/O=Company, Inc./OU=ITDepartment/CN=mail.CHANGEME.com"

Confirm

[ su - root ; cd /opt/zimbra/ssl/zimbra/commercial/ ]
ls -la

There should only be two files and time/date should match - commercial.csr & commercial.key

cat /opt/zimbra/ssl/zimbra/commercial/commercial.csr
 -----BEGIN CERTIFICATE REQUEST-----
[delete]CCAWwCAQAwgZkxCzAJBgNVBAYTAlVTMQwwCgYDVQQIEwNOL0ExDDAKBgNV
[delete]4vQTEjMCEGA1UEChMaWmltYnJhIENvbGxhYm9yYXRpb24gU3VpdGUxIzAh
[delete]AsTGlppbWJyYSBDb2xsYWJvcmF0aW9uIFN1aXRlMSQwIgYDVQQDExttYWls
[delete]nRlcm5hbC5ob21ldW5peC5jb20wgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJ
[delete]AOri9/m6RtM1vASBROPgLvkUYybwf2WDI2xTdKUuAMI0rTpMH1IzjPRP/J+m
[delete]RQTiJe1mRX3rJCy3qVooVzsLe2yJ1+rs3FzLSfQhazK6PqMD8GhpqHO0Y75
[delete]LEA/qdOCrTFjosO9C3j3WPCW8lutTxf/QsoKGkIVs5tjAgMBAAGgKTAnBgkq
[delete]0BCQ4xGjAYMAkGA1UdEwQCMAAwCwYDVR0PBAQDAgXgMA0GCSqGSIb3DQEB
[delete]A4GBAKMLVFilRjI9xvU/vZmP69yReVZyxa5YVpF/cEvwFwbOU6E4USkdONGT
[delete]DRj1XxfzYD+CDf8TVuTY4tapaLvKPRUtdd/mM1PidY5t126QAObyKjHBRzy
[delete]RJFQeP+0ktxcYJ99+sfiescwR/qzPJM58i6daqmMamQBZi
  -----END CERTIFICATE REQUEST-----

Sign up for cacert.org use

Goto http://www.cacert.org/

Sign up - https://www.cacert.org/index.php?id=1

Verify the email the confirmation email.

Add a domain , it will send an email to some "admin" account to the domain. Make sure you can get it before you do this.

Get New Server Certificate

Now do a New Server Certificate from your administration page at http://www.cacert.org/

You'll copy in the /opt/zimbra/ssl/zimbra/commercial/commercial.csr contents in window [all of it].

It'll generate your cert. on the webpage.

Copy this onto the server [paste in cert details]:

vi /opt/zimbra/ssl/zimbra/commercial/commercial.crt
-----BEGIN CERTIFICATE-----
[delete]TCCAl2gAwIBAgIDBPRRMA0GCSqGSIb3DQEBBQUAMHkxEDAOBgNVBAoTB1Jv
[delete]0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0Lm9yZzEiMCAGA1UEAxMZ
[delete]2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJARYSc3VwcG9y
[delete]NlcnQub3JnMB4XDTA4MDQxMTIwMjQzNloXDTA4MTAwODIwMjQzNlowJjEk
[delete]1UEAxMbbWFpbDMuaW50ZXJuYWwuaG9tZXVuaXguY29tMIGfMA0GCSqGSIb3
[delete]AQUAA4GNADCBiQKBgQDq4vf5ukbTNbwEgUTj4C75FGMm8H9lgyNsU3SlLgDC
[delete]B9SM4z0T/yfpoZc3yUUE4iXtZkV96yQst6laKFc7C3tsidfq7Nxcy0n0IWs
[delete]BoaahztGO+ZgsfCxAP6nTgq0xY6LDvQt491jwlvJbrU8X/0LKChpCFbOb
[delete]QABo4HcMIHZMAwGA1UdEwEB/wQCMAAwNAYDVR0lBC0wKwYIKwYBBQUHAwIG
[delete]QUFBwMBBglghkgBhvhCBAEGCisGAQQBgjcKAwMwCwYDVR0PBAQDAgWgMDMG
[delete]QUFBwEBBCcwJTAjBggrBgEFBQcwAYYXaHR0cDovL29jc3AuY2FjZXJ0Lm9y
[delete]QYDVR0RBEowSIIbbWFpbDMuaW50ZXJuYWwuaG9tZXVuaXguY29toCkGCCsG
[delete]wgFoB0MG21haWwzLmludGVybmFsLmhvbWV1bml4LmNvbTANBgkqhkiG9w0B
[delete]AAOCAgEANzr/jRcEd5BF2QqF+X8deq4Xxp1tN9lFgji38C5ixNJ+Busq9Sk5
[delete]O7YYJQbSf5K14eZyC1jaNEOEwqgzFiM1HRWL1HCca3EM7TXUoH8sMXS1Ng
[delete]M5oyfQcFWZYa22CtKQANQEX5l7EYNkr0yvD/YnP02l3hk1jZr+3pszCW6Iw
[delete]vabHMYcAXus+iOGgws788QsMaqzoZwla1AaacZ98s0lFAR0xdRiuXCHUFz
[delete]meS5sK+med95/z+Mb6ShJzC7KAi1nfZk9CoNHUHVxMis5Cr+GT7MoIvhQ
[delete]8fkiANQQoEgam37lyHezPKyc6iLxW4ag2PWKrZa2+3pyTg/6aHKxZR325z
[delete]kcdwKYo/eUGaN1tNmsY638N4hCz01FHHKr97W0m4u5wtwKBo4/5Gy9e5nG6
[delete]khOyjfOz6VYvZHNqDaqGJwsxitxSGGDc8bA+9d73RCOFuztwVrKYg5OJ
[delete]Ei5C9gWzee7AmoGpgxOrYjgBrx4nuBw71EFzgKSOZqxUxSNiLuGAx+oVd2
[delete]Z4EAPsa90ZNb0mLGagAuTAdccekOqPVnyZrqiINelY7fpAAUvO9rgTSB9A
[delete]RxUydTgY1jyBtoXjp59HMVbCkAtOtX43NqIhPYJNPeSoyw/5SU=
-----END CERTIFICATE-----

Get Root CA's

Root CA certs are found here  : https://www.cacert.org/index.php?id=3

Do the following on the server:

[ su - root ; cd /opt/zimbra/ssl/zimbra/commercial/ ]
wget http://www.cacert.org/certs/root.crt
mv root.crt commercial_ca.crt

Verify

Let's verify all is good.

[ su - root ; cd /opt/zimbra/ssl/zimbra/commercial/ ]
/opt/zimbra/bin/zmcertmgr verifycrt comm commercial.key commercial.crt

Giving something like this:

** Verifying commercial.crt against commercial.key
Certificate (commercial.crt) and private key (commercial.key) match.
Valid Certificate: commercial.crt: OK

Errors - Double check time

• Date [is it wrong?]
  • Install ntpd if it's not
  • Stop ntpd  :

    • /etc/init.d/ntpd stop

  • Set time with  :

    • ntpdate us.pool.ntp.org

  • Confirm time change  :

    • date

  • Confirm hardware clock time  :

    • hwclock

  • Sync hardware clock time  :

    • hwclock --systohc

  • Confirm hardware clock time  :

    • hwclock

  • Start ntpd now  :

    • /etc/init.d/ntpd start

Deploy CA

[ su - root ; cd /opt/zimbra/ssl/zimbra/commercial/ ]

/opt/zimbra/bin/zmcertmgr deploycrt comm commercial.crt

Restart the webserver

su - zimbra
zmmailboxdctl restart