I am sending calendar appointments to a sharepoint calendar. It works fine if i send from my exchange email on the domain. However if i try to send from outlook, which has a gmail (live account same error) account off network, the mail comes to the drop folder on my incoming email sharepoint server but then i get this error: An error occurred while processing the incoming e-mail file C:\inetpub\mailroot\Drop\4ab7332801cb38a6000000c7.eml. The error was: The user does not exist or is not unique.. next error is The Incoming E-Mail service has completed a batch. The elapsed time was 00:00:00.0625004. The service processed 1 message(s) in total. Errors occurred processing 1 message(s): Message ID: <000001cb38a5$00a4f100$01eed300$@com> external users can just find send email and documents to other document libraries but this calendar is giving me problems. all servers sharepoint 2007 sp2 enterprise edition. thanks

So if I have this correct, you can send a calendar appointment to this calendar from Exchange inside your network, but if you send a calendar appointment to this same calendar outside your network you get the error (correct me if I've got it confused). The error is stating that the user does not exist or is not unique. I'm assuming that the address does exist and is unique or you would get the same error when sending from Exchange. First a question, do calendar appointments sent externally to other SharePoint calendars get processed correctly? Check this first to see if it's not something in the way the external program is formatting the appointment messages. Based on the error, my first guess would be that there is something wrong with the e-mail address. So here is what I would do: 1.) Send a test calendar appointment from Exchange. Locate the e-mail in the drop folder on the SharePoint server and save off a copy. 2.) Do the same with an appointment from an external recipient. 3.) Open the .eml files in notepad and compare the recipient addresses, do they match? Look for any differences between the two. Please report back on what you find.Fred Ellis - MSFT

I appologize in such the long delay, i have been getting my hands into crm now as well. i had them send the exact same email message to the server, i grabbed them from the mail drop folder before they were processed, printed them out and checked all the emails. The only difference is the first 4 lines of the email messages, and various lines though out the message that designated when it passed through our spam and antivirus scanners and various time stamps. still 1 worked the other didn't. I even took the top 4 lines off the working library and added it to the non workin email file, placed it back into the drop folder and it worked. really realy confusing now. we gave the person an email account and it works sending from that as a work around but still curious as to what is happening so maybe others could resolve it if the problem arrises.