I have a problem (deferral: Sorry,_I_couldn't_find_any_host_by_that_name).
Qmail send sucessfully to most domain (@yahoo.com, @hotmail.com, @teacher.com, @vnn.vn ...), but except domain is @vol.vnn.vn. I have check the domain, I still send mail to the domain (@vol.vnn.vn address) sucessfully from other mail server (@yahoo.com, @hotmail.com, @vnn.vn ...).
I don't know why?
Please hepl me
