pool member sending Alert (Level: Fatal, Description: Unknown Certificate [46]) for a new SSL Cert of a VS

Excuse my delay. Pardon me... instead of replying back I was writing answer. Organized mess :)

@syslog:~$ openssl s_client -connect 10.5.29.11:443

CONNECTED(00000003)

depth=2 C = US, O = "Entrust, Inc.", OU = See www.entrust.net/legal-terms, OU = "(c) 2009 Entrust, Inc. - for authorized use only", CN = Entrust Root Certification Authority - G2

verify return:1

depth=1 C = US, O = "Entrust, Inc.", OU = See www.entrust.net/legal-terms, OU = "(c) 2012 Entrust, Inc. - for authorized use only", CN = Entrust Certification Authority - L1K

verify return:1

depth=0 C = XX, ST = XX, L = XX, O = X Y Z, XX = *.abc.com

verify return:1

---

Certificate chain

 0 s:/C=xxxxx/CN=*.abc.com

  i:/C=US/O=Entrust, Inc./OU=See www.entrust.net/legal-terms/OU=(c) 2012 Entrust, Inc. - for authorized use only/CN=Entrust Certification Authority - L1K

 1 s:/C=US/O=Entrust, Inc./OU=See www.entrust.net/legal-terms/OU=(c) 2012 Entrust, Inc. - for authorized use only/CN=Entrust Certification Authority - L1K

  i:/C=US/O=Entrust, Inc./OU=See www.entrust.net/legal-terms/OU=(c) 2009 Entrust, Inc. - for authorized use only/CN=Entrust Root Certification Authority - G2

 2 s:/C=US/O=Entrust, Inc./OU=See www.entrust.net/legal-terms/OU=(c) 2009 Entrust, Inc. - for authorized use only/CN=Entrust Root Certification Authority - G2

  i:/C=US/O=Entrust, Inc./OU=See www.entrust.net/legal-terms/OU=(c) 2009 Entrust, Inc. - for authorized use only/CN=Entrust Root Certification Authority - G2

---

Server certificate

Server public key is 4096 bit

  Verify return code: 0 (ok)

 syslog:~$ openssl s_client -connect 10.5.15.120:443

CONNECTED(00000003)

depth=0 C = XX, ST = XX, L = XX, O = xxxxxxx, OU = IT, CN = *.abc.com

verify error:num=20:unable to get local issuer certificate

verify return:1

depth=0 C = XX, ST = XX, L =XX, O = xxxxxxxx, OU = IT, CN = *.abc.com

verify error:num=21:unable to verify the first certificate

verify return:1

---

Certificate chain

 0 s:/C=xx/ST=xx/L=xx/O=xxxxxxxx/OU=IT/CN=*.abc.com

  i:/DC=com/DC=domain/CN=COLOCAL-CA

---

Server certificate

-----BEGIN CERTIFICATE-----

subject=/C=XXXXXXXX/OU=IT/CN=*.abc.com

issuer=/DC=com/DC=domain/CN=COLOCAL-CA

---

No client certificate CA names sent

Server public key is 4096 bit

  Verify return code: 21 (unable to verify the first certificate)

---

closed

I am taking the client doing SSL connection request does not have the Local CA cert installed.