Verification Failed

Hi,

After I have set up a two system to transfer files I got following error, it says verification failed.

I set up the system according followin url thread
http://community.mendelson-e-c.com/node/389

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[6:44:36 AM] Keys and certificates loaded from "C:\mendelson\opensource\as2\certificates.p12".
[6:44:50 AM] mendelson_opensource_AS2-1263818690458-4@testsystem_mainsystem: Outgoing message signed with the algorithm SHA-1,using keystore alias "test system".
[6:44:50 AM] mendelson_opensource_AS2-1263818690458-4@testsystem_mainsystem: Outgoing message has not been encrypted.
[6:44:50 AM] mendelson_opensource_AS2-1263818690458-4@testsystem_mainsystem: Outbound AS2 message created from "EM-soapui-project.xml" for the receiver "main system" in 109ms, raw message size: 9.73 KB
[6:44:52 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: Incoming transmission is a MDN.
[6:44:52 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: MDN is the answer to AS2 message "mendelson_opensource_AS2-1263818690458-4@testsystem_mainsystem".
[6:44:52 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: MDN state is [ processed].
[6:44:52 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem:
Details of MDN received from remote AS2 server:
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The AS2 message has been received. Thank you for exchanging AS2 messages with mendelson opensource AS2.
Please download your free copy of mendelson opensource AS2 today at http://opensource.mendelson-e-c.com
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[6:44:53 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: MDN is not encrypted.
[6:44:53 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: MDN is signed.
[6:44:53 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: Using certificate "main system" to verify signature.
[6:44:53 AM] mendelson_opensource_AS2-1263818670046-3@mainsystem_testsystem: Verification of digital signature failed (Verification failed

Signature certificate information:
Serial number (dec): 1263813221
Issuer: CN=main system,OU=main system,O=main system,L=nl,ST=nl,C=nl,1.2.840.113549.1.9.1=#16176461727368616e614072657475726e706f6f6c2e636f6d

Verification certificate information:
Serial number (dec): 1263553456
Issuer: CN=main system, OU=main system, O=main system, L=nl, ST=am, C=nl, EMAILADDRESS=darshana@returnpool.com).
[6:44:53 AM] Error verifying the senders digital signature: Verification failed

Signature certificate information:
Serial number (dec): 1263813221
Issuer: CN=main system,OU=main system,O=main system,L=nl,ST=nl,C=nl,1.2.840.113549.1.9.1=#16176461727368616e614072657475726e706f6f6c2e636f6d

Verification certificate information:
Serial number (dec): 1263553456
Issuer: CN=main system, OU=main system, O=main system, L=nl, ST=am, C=nl, EMAILADDRESS=darshana@returnpool.com.
[6:44:53 AM] mendelson_opensource_AS2-1263818690458-4@testsystem_mainsystem: Transaction state written to C:\mendelson\opensource\as2\messages\main_system\sent\test_system\20100118\EM-soapui-project.xml_mendelson_opensource_AS2_1263818690458_4@testsyste....