[CentOS] Planning Mail Server (with low resources)

Rodrigo Barbosa wrote:

> You might also want to change Cyrus-imapd to something simpler, like
> wu-imapd, since it should take less resources from the machine. Then again,
> I have very little experience with cyrus, since I either use wu or courrier.

Cyrus needs less resources than wu-imapd.  Each time you open mailbox, 
wu-imapd needs to read it from beggining to the end from the disk, and 
alocate possibly large chunks of memory as long as you keep connection 
open.  Cyrus will simply consult its internal database.  Huge difference 
in speed and load on machine.  So, the slower/older your hardware is, 
the more inclined you should be to run cyrus.