title: sql server 2008 dbmail error sp_send_dbmail - cannot insert null value into 'last_mod_user' in table sysmail_mailitems
body: <p>Our dbmail got hosed and I'm trying to resolve the issue.</p>
  
  <p>I've recently recreated sp_send_dbmail, but am not getting an odd error regarding a null value in last_mod_user column in table msdb.dbo.sysmail_mailitems (error 515)</p>