Problem sending an attachment using dbo.sp_send_dbmail

Question

I am trying to send an attachment using dbo.sp_send_dbmail. I can't do this I get the error Attachment file \VMName\ListTEAM\LCPP_CP.pdf is invalid.

Just some quick things that I have checked. I have tried various naming conventions. I have shared the folder that the attachment is in. I checked the Log On As in the Services MMC on the VM that the SQL database sits on. The Log On As for SQL SERVER and SQL SERVER AGENT is SQLReportingAdmin@lan.domain.com I have given this user SQLReportingAdmin@lan.domain.com access to the directory that the file that I want to send as an attachment is in. I have triple checked the accuracy of the locations. The user SQLReportingAdmin@lan.domain.com now has read and execute permissions on C$ on the relevant VM.

The file LCPP_CP.pdf is 72 KB.

The file LCPP_CP.pdf is not read only The profile is public

I can send an email without an attachment. The send_request user in dbo.sysmail_mailitems is domain\SQLReportingAgent

My questions are

• Is there a stored procedure that I can use to check the SQL Engine logged on user?
• Is it possible that msdb.dbo.sp_send_dbmail is not running under the SQL SERVER account?
• If so is there a stored procedure that I can use to check what user msdb.dbo.sp_send_dbmail is using
• Is it possible that this isn't a permissions issue?

My code is below but it is really just boilerplate; the commented lines are the various permutations that I have tried.

EXEC msdb.dbo.sp_send_dbmail

@recipients=N'valid@emailaddress.com',

@body= 'Test Email Body', 

@subject = 'Test Email 18:01',

@profile_name = 'Team Meeting Profile'
--@file_attachments ='\\VMName\c$\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments =N'\\VMName\c$\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments ='\\C:\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments =N'\\C:\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments ='C:\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments =N'C:\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments ='\\VMName\TEAMLists\TEAM\LCPP_CP.pdf'
--@file_attachments ='\\VMName\ListTEAM\LCPP_CP.pdf'