20 Jun
2012
20 Jun
'12
2:30 p.m.
I know it. I have to tune it.
-- he did not only changed Dovecot but OS. I would bet it is his OS problem - as he stated 100% of single core is used while 6 are available. something definitely not dovecot dependent.
i would recommend installing exactly the same version of old dovecot on new OS and test it.