Of course Lomnido can receive SOAP messages. The only thing you need is a Workflow with an “Wait for HTTP” Inbound Connector and a Inbound Processor that expects XML. Optional you can define a Dataformat to deliver a more detailed WSDL definition.
In this video you can see how such a SOAP workflow can be configured and be tested with an external tool like SOAP UI.
It takes only 2 minutes to configure and test the Workflow!