Hello all, I have integrated qmail with ldap, this has been successfuly done and its working fine till today. Now am into load test the combination, The attribute deliveryprogrampath in qmailuser entry i have specified my own program (called maildump), Its a dumb program, it only stores the mail in a file in some directory. The permissions of that directory is perfect. When i bombed mails some mails get delivered i mean they get stored in that directory and others get bounced. I am using tmpnam() in maildump program to create unique file. In the log i saw "Sorry no mail box here by that name (#5.1.1). The same setup works if i send mails one or two or 3. It only bounces if they are many. In concurrencyincoming and concurrencylocal i have set to 20. Please do help me out. Thanx in advance ---------------------------- K Vishwanath iNabling Technologies Pvt Ltd Rajajinagar Ph: 3104686, 3104687 ---------------------------