Hi Guys,
Sorry for hacking this tread..But I am also facing same issue with RHEL 5.2
From last 2 years I am doing Zimbra administration and install multiple zimbra version n number of time in our test setup but never faced this issue.
Right now I am trying to install zcs-6.0.6_GA_2324.RHEL5_64.20100406150533 on RHEL 5.2 ...just similar our production env but I am keep getting below certificate error :
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** Creating /opt/zimbra/ssl/zimbra/ca/zmssl.cnf...done
** Retrieving CA private key from ldap...failed.
** Retrieving CA cert from ldap...failed.
** Creating CA private key /opt/zimbra/ssl/zimbra/ca/ca.key...done.
** Creating CA cert /opt/zimbra/ssl/zimbra/ca/ca.pem...done.
Thu Apr 6 17:27:52 2000 done.
Thu Apr 6 17:27:52 2000 Deploying CA to /opt/zimbra/conf/ca ...
Thu Apr 6 17:27:52 2000 *** Running as root user: /opt/zimbra/bin/zmcertmgr deployca -localonly
** Importing CA /opt/zimbra/ssl/zimbra/ca/ca.pem into CACERTS...done.
** Copying CA to /opt/zimbra/conf/ca...done.
Thu Apr 6 17:27:53 2000 done.
Thu Apr 6 17:27:53 2000 Creating SSL certificate...
Thu Apr 6 17:27:53 2000 *** Running as root user: /opt/zimbra/bin/zmcertmgr createcrt self
** Creating /opt/zimbra/conf/zmssl.cnf...done
** Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20000406172753
** Retrieving server config key zimbraSSLCertificate...failed.
** Retrieving server config key zimbraSSLPrivateKey...failed.
** Generating a server csr for download self -keysize 1024
** Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20000406172759
** Creating server cert request /opt/zimbra/ssl/zimbra/server/server.csr...done.
** Saving server config key zimbraSSLPrivateKey...failed.
** Signing cert request /opt/zimbra/ssl/zimbra/server/server.csr...failed.
Using configuration from /opt/zimbra/ssl/zimbra/ca/zmssl.cnf
unable to load number from /opt/zimbra/ssl/zimbra/ca/ca.srl
error while loading serial number
26907:error:0D066091:asn1 encoding routines:a2i_ASN1_INTEGER

dd number of chars:f_int.c:162:
Thu Apr 6 17:28:01 2000 done.
Thu Apr 6 17:28:01 2000 Installing mailboxd SSL certificates...
Thu Apr 6 17:28:01 2000 /opt/zimbra/mailboxd/etc/keystore didn't exist.
Thu Apr 6 17:28:01 2000 *** Running as root user: /opt/zimbra/bin/zmcertmgr deploycrt self
** Saving server config key zimbraSSLCertificate...failed.
** Saving server config key zimbraSSLPrivateKey...failed.
** Installing mta certificate and key...done.
** Installing slapd certificate and key...done.
** Installing proxy certificate and key...done.
** Creating pkcs12 file /opt/zimbra/ssl/zimbra/jetty.pkcs12...failed.
XXXXX ERROR: failed to create jetty.pkcs12
No certificate matches private key
Thu Apr 6 17:28:07 2000 failed.
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I am really surprized... i have reinstalled RHel 5.2 on my VM and tried n number of time..no luck...hosts file and DNS setup is correct...and even 'Defaults requiretty' is already commented.
It will be great if someone can guide me for the same.
Thanks