Originally Posted by satishmali1983
I am new with mail server...<SNIP>...sort out this problem.
If you're an inexperienced mail admin and you don't need qmail I would highly recommend a different mail package (postfix, sendmail, exim).
Diagnostics of qmail problems is not very newbie friendly and unless you are moving many millions of messages a day the speed difference between any of them is negligible on modern hardware.
I wish someone would just update qmail itself instead of having to deal with all the hacked up patched versions where you never know what exactly has been done.