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ytbx4
2014 Aug 28
0
POP/IMAP HA solution for 5k users
...mtp will
not be reachable.
Locations of servers are in different cities:
Locations #1 - SMTP servers as virtual machines (vmware server or
virtualbox), with CPU i3, 6GB RAM, SSD, Centos 6, Virtualmin
Location #2 - Dovecot/webmail server: CPU i5, 16GB RAM, HDD 1SSD for
OS/dovecot indexes and SATA 2TBx4 LVM (total 8TB) for Maildir's, Centos 6,
Virtualmin
Location #3 HOT BACKUP (always online) server in case of mail.example.com
or smtp.example.com failure, electricity outage and etc. It contains
Dovecot/webmail server: CPU i3, 8GB RAM, HDD 1SSD for OS/dovecot
indexes and SATA 2x4TB LVM (total...