IDEMPIERE-2864 Alert Processor vs Attachment File system can't send EMails properly

org.adempiere.base/src/org/compiere/model/AttachmentFileSystem.java

@@ -93,11 +93,12 @@ public class AttachmentFileSystem implements IAttachmentStore {
 						in.transferTo(0, in.size(), out);
 						in.close();
 						out.close();
+						/* IDEMPIERE-2864
 						if(entryFile.exists()){
 							if(!entryFile.delete()){
 								entryFile.deleteOnExit();
 							}
-						}
+						}*/
 						entryFile = destFile;
 
 					} catch (IOException e) {

org.adempiere.server/src/main/server/org/compiere/server/AlertProcessor.java

@@ -228,6 +228,13 @@ public class AlertProcessor extends AdempiereServer
 		Collection<Integer> users = alert.getRecipientUsers();
 		int countMail = notifyUsers(users, alert.getAlertSubject(), message.toString(), attachments);
 		
+		// IDEMPIERE-2864
+		for(File attachment : attachments)
+		{
+			if(attachment.exists() && !attachment.delete())
+				attachment.deleteOnExit();
+		}
+		
 		m_summary.append(alert.getName()).append(" (EMails+Notes=").append(countMail).append(") - ");
 		return valid;
 	}	//	processAlert

org.adempiere.server/src/main/server/org/compiere/server/Scheduler.java

@@ -277,6 +277,13 @@ public class Scheduler extends AdempiereServer
 				}
 				
 			}
+			
+			// IDEMPIERE-2864
+			for(File file : fileList)
+			{
+				if(file.exists() && !file.delete())
+					file.deleteOnExit();
+			}
 		}
 		
 		return pi.getSummary();