Am 23.06.2012 13:09, schrieb Wojciech Puchar: >> >> I'm currently (re-)planning my email setup and have been doing some >> research. I have done some searches and read >> several threads in the areas of my questions here. While there are some that >> come close I haven't yet been able >> to get all my questions answered. >> >> I currently run a postfix, dovecot & roundcube setup and have about 2000 >> active accounts. I have a separate SMTP >> server for outbound mail and auth is done against a separate LDAP server. In >> front of the POP/IMAP server I have >> another SMTP (4 in parallel actually) server that receives and filters >> inbound mail through a company specific, >> proprietary filter before the mail hits the POP/IMAP server. LDAP & SMTP >> servers are ESXi VMs. > > it is already enormous overshoot in hardware specs. And i do not really catch > why you have "4 in parallel" servers. > And finally i cannot understand this dividing of servers just to merging it > back using VMWare.
because it is a big difference if you have anything in a single machine or splittet in virtual machines - you can move them at runtime to different hosts and if you run out of ressources for one of them you can buy a phyisclal machine, add it to the cluster and move the virtual machine without any downtime if you have all on one machine or VM you are not scaleable
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