Awareness with Notes 6.5.1 against Sametime 7.0 server – broken?

I upgraded the combined Domino/Sametime server at a remote site from Domino 6.5.4/Sametime 6.5.1 to Domino 7.0/Sametime 7.0 the other day. The only issue during the upgrade were some problems with some files being written to the wrong place. Afterwards the install tested out okay. The problem was however that I tested using my Notes 7.x client… 😦

As mentioned I thought everything was fine – the problems started this morning however. The users (running awareness from Notes 6.5.1 clients) started complaining about Sametime connectivity issues. It appears that Sametime 7.0 isn’t allowing connections from Notes 6.5.1 clients (Sametime error: 0x8000003). The solution so far appears to be upgrading the clients to 6.5.4 (or downgrading the server).

I don’t want to downgrade the server so I have to decide whether to go with Notes 6.5.5 or Notes 7.0 (I’m still having issues with my Notes 7.0.1 install).

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