Hi Alonso,
Per your response to RB, May I say that I can have SRM SSO to Lotus Notes if Lotus Notes supports SAML or X.509 certificates?
this is a bit tricky. So you have to differ between lotus notes web client and the native client. I would expect that the web client is supporting X.509 and/or SAML. But you have to check the web application server.
For native clients the client has to support X.590 certificates. So the client has to be able to pick up the certificate from the Microsoft Certificate Store (here the certificate from SAP NW SSO will be stored on the client). This you have to check with IBM.
I would guess that the native Lotus Notes client is not supporting SAML -> this is a standard for Web SSO.
Regards
Matthias