Hi all, I had been searching high and low to solve this problem. I am using vpopmail+dspam and maildrop as the LDA. However, i am facing this error message. maildrop -d zai...@unrealasia.net -V 9 < /etc/hosts maildrop: authlib: groupid=1089 maildrop: authlib: userid=1089 maildrop: authlib: logname=zai...@unrealasia.net, home=/usr/local/ vpopmail/domains/unrealasia.net/zaihan, mail=(default) maildrop: Changing to /usr/local/vpopmail/domains/unrealasia.net/ zaihan Message start at 0 bytes, envelope sender=zai...@unrealasia.net maildrop: Attempting .mailfilter maildrop: Delivering to /var/mail/zai...@unrealasia.net maildrop: Unable to open mailbox. This is weird, as it should deliver to /usr/local/vpopmail/ domains/ unrealasia.net/zaihan and instead it delivers to /var/ mail/ zai...@unrealasia.net