Created Issue: Can't update any Ticket BugNET Error 1.3.242.0 [95]

I keep getting below error in email whenever I'm I visit my page and also when I try to do an update to any ticket. Please any clue what may be the problem?


2013-02-26 13:50:22,367 [9] ERROR BugNET.BLL.IssueNotificationManager [(null)] - Email Notification Error


System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Email\9a7d94d4-b319-4ca6-b4fc-277f9b4f1321.eml'.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode)
at System.Net.Mail.SmtpClient.GetFileMailWriter(String pickupDirectory)
at System.Net.Mail.SmtpClient.SendAsync(MailMessage message, Object userToken)
--- End of inner exception stack trace ---
at System.Net.Mail.SmtpClient.SendAsync(MailMessage message, Object userToken)
at BugNET.BLL.Notifications.SmtpMailDeliveryService.Send(String recipientEmail, MailMessage message)
at BugNET.BLL.IssueNotificationManager.SendIssueNotifications(Int32 issueId, IEnumerable`1 issueChanges)


Thanks,