[Mailman-Users] no mailbox here by that name error

[lito lampitoc]

I received this bounce error 

<test-list-request at lists.codewan.com.ph>:
Sorry, no mailbox here by that name. (#5.1.1)

even though I followed all the required steps in README.QMAIL,
tried to use qmail-to-mailman.py and did a manual aliasing too, but no
luck, I have been with this problem for 3 days now. I compiled mailman
with different mail group gid such as qmail and mailman, still it
doesn't work, what do you think is the problem?

Please help. 

Thanks.