The Lync Server Web Scheduler has been released to the Web. You can access this here:
Microsoft Lync Server 2010 Web Scheduler provides a Web-based online Lync meeting scheduling and management experience for Lync Server 2010.
Well, it may have been released, but if you guys & girls on the TechNet blogs read the forums you will know that there are BIG problems with it!
I am having the same issue that is being reported all over the net. If I have a recipient listed and the checkbox selected to send the e-mail invitation, the Lync Web Scheduler fails. If I remove the recipient and uncheck the checkbox to send the e-mail it schedules just fine.
I have done wireshark traces on both the front-end, director, Exchange Hub Transport and the AD servers. I think the problem has to do with the LDAP lookup against AD. I have followed the setup guide to the letter. I have even created a user account with "Send As" permissions down our entire AD and set it up just like a BES account making it a member of the "View-Only Organization Management" group and giving it access to all my Exchange databases! I have also added the IP address of the Front-End and Director servers to the correct SMTP connector in the Exchange environment. NOTHING WORKS!
What should happen is if the web scheduler cannot do an LDAP lookup or cannot find or resolve the SMTP address it should just drop the e-mail onto the SMTP server and allow it to try and deliver it. How will this work if you are including an e-mail address in the invitation to an address that is outside your organization? The LDAP lookup will never find the e-mail address and abjectly fail!
Microsoft and the developers need to create a better, more detailed installation guide.