spambox a écrit : > Hello everyone. > > This is my first question here so please forgive me if i'm out of topic or > something... > > > I'm building up this architecture with postfix + ldap + Courier IMAP > (i hope the below ascii art is displaying correctly :) > > > > |-------------| > | postfix1 | very big storage > | LDAP1 |-------------|******************** > | server1 | | * > |-------------| | /home1 * > | | * > | |-------------------* > |-------------| | * > | postfix2 | | * > | LDAP2 |-------------| /home2 * > | server2 | | * > |-------------| | * > | |-------------------* > | | * > |-------------| | /home3 * > | postfix3 | | * > | LDAP3 |-------------|******************** > | server3 | > |-------------| > > > > > Now, let me explain how this is going to work. > This architecture works with Qmail+Ldap, i need to use PostFix instead (for > many reason) > > server1,2,3 have 1 balancer in fron which simply redistribute the traffinc > among the 3 servers. > > if one server goes down, the one next to him will Up his ip address and mount > his partition on the storage untill the server restarts correctly. > > Now, i've a couple of questione here. > > > 1) I've never used Courier IMAP, but reading on the internet i've found that > it use gethostbyname() to resolve and this may cause an infinite loop for a > host with 2 interface but one hostname if one server goes down. > So, i'm afraid that i will be able to installa courier-imap on each server > and this will cause a big problem to the scalability of the system. > > 2) Has anyone ever tryed something like this and its ablet to redirect me to > some good documentation? >
courier has its own mailing lists where you'll get better support. I doubt you'd have any problem here but you'd better ask courier experts on courier lists. note that email encompasses two completely different things: - mail transport which postfix does well. - mail retrieval (pop3, imap, webmail). this is a different thing and is out of topic here. > > Thank you very much for your time and for any tip or advice. > > Good bye everyone. > > > >
