Partner Unable to connect - SSL Handshake issue

Hi,
I am new to OFTP2 and certificates, so I am sorry if I have some errors in basics.

I have setup the OFTP2 software on my end and i am able to successfully transmit the files to the partner endpoint. But when the partner server is trying to connect to my OFTP2 end point, they are not able to connect to my server and i am seeing the following error message in my log. I have imported the client public key of the partner end point on my end, but i am still getting this error. Really appreciate your timely help.

Error on our Server:
javax.net.ssl.SSLHandshakeException: SSL handshake failed.
at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:519)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:542)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300(DefaultIoFilterChain.java:48)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:947)
at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:109)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:542)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:535)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:703)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:659)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:648)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$600(AbstractPollingIoProcessor.java:68)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1120)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLHandshakeException: no cipher suites in common
at sun.security.ssl.Handshaker.checkThrown(Unknown Source)
at sun.security.ssl.SSLEngineImpl.checkTaskThrown(Unknown Source)
at sun.security.ssl.SSLEngineImpl.writeAppRecord(Unknown Source)
at sun.security.ssl.SSLEngineImpl.wrap(Unknown Source)
at javax.net.ssl.SSLEngine.wrap(Unknown Source)
at org.apache.mina.filter.ssl.SslHandler.handshake(SslHandler.java:601)
at org.apache.mina.filter.ssl.SslHandler.messageReceived(SslHandler.java:360)
at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:500)
... 15 more

Error on the Partner Server:
07/10/2020 11:33:22 General TCP0A4VI Authenticating as client without using a certificate
07/10/2020 11:33:23 Error TCP0A55E Authentication failed: A call to SSPI failed, see inner exception.
07/10/2020 11:33:23 Error TCP0A55E Inner Exception: The message received was unexpected or badly formatted

Forum
OFTP2