[users@httpd] verify error:num=20:unable to get local issuer certificate

[Arun G Nair <arungnair@xxxxxxxxx>]

Hi all,
    I get this error when trying to connect to my SSL enabled site with openssl's s_client.

"verify error:num=20:unable to get local issuer certificate"
 
I have purchased a CRT signed by AddTrust External Root CA through Comodo.
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debian:/etc/apache# /usr/bin/openssl s_client -connect localhost:443
-cert ./ssl.crt/server.crt -key
./ssl.key/server.pem                                                
CONNECTED(00000003)
depth=1 /C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
verify error:num=20:unable to get local issuer certificate
verify return:0
---
Certificate chain
 0 s:/C=US/2.5.4.17=22655/ST=Virginia/L=Stephens
City/2.5.4.9=Stephens City/2.5.4.9=5395 Main Street/O=My Company
Inc/OU=Sales/OU=InstantSSL/CN=www.myco.com
   i:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
 1 s:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
   i:/C=US/ST=UT/L=Salt Lake City/O=The USERTRUST Network/OU=http://www.usertrust.com/CN=UTN

...[snip]...

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Waiting for your replies..

Regards,
Arun