[Dovecot] Cyrus vs Dovecot

[Mathieu Kretchner]

Charles Marcus a écrit :
> On 8/11/2008, Mathieu Kretchner (mathieu.kretchner at sophia.inria.fr) wrote:
>> So here is my next environment :
>>
>> how many mailbox ?
>> 5000
> 
> with adequate hardware/RAM, no problem
> 
>> how many users ?
>> 6000
> 
> again - with adequate hardware/RAM, no problem
> 

Ok it seems to be great, but wath do you consider to be an adequate 
hardware/RAM for this kind of environment ?

> Concurrent access/usage will dictate if you need more than one server.
> 
>> what kind of access ?
>> IMAP(s), POP3(s), webmail
> 
> no problem - webmail is separate of course, use whichever webmail app 
> you like

yes, of course, this will be an other discussion :)

> 
>> how many server ?
>> 2 (how to configure this with dovecot ? hearthbeat ? is it better with 
>> 1 big hardware ? )
> 
> Timo is working on integrated replication right now, but it does 
> currently have proxy capability that I understand works well and makes 
> this fairly painless, although I haven't used it...
> 
> But I'm not sure if you are talking about 2 REDUNDANT servers (for 
> fail-over in the event the primary fails), or 2 active/load-balanced 
> servers... proxy would work for load-balancing, and you can configure 
> anything to use heartbeat, no?

I've explicitly post a fuzzy question to have this kind of answer ! 
Thanks I've a better global view of dovecot now.

> 
>> Database user ?
>> LDAP

Here is an other problem : we don't have uid/gid stored in our LDAP 
database. Do we have to configure dovecot with a dovecot specific 
user/group ?

> 
> no problem
> 
>> Mail DB ?
>> Cyrus maildir
> 
> You'll have to convert to standard maildir:
> 
> http://wiki.dovecot.org/Migration/Cyrus

Thanks for the url, I've already seen it before and the script 
cyrus2courrier seems good but we wonder why you didn't mention imapsync 
? (maybe because for mass migration we must have a clear password file?)

> 
>> Capability ?
>> Sieve / Quota
> 
> On latest version (1.1.2 currently), no problem, but a newer/full 
> rewrite to provide native sieve capability is in progress, which will 
> provide much better control
> 
>> High Performance without hacking conf files !
> 
> this is one of dovecots strongest points imo...
> 

Indeed, we bench cyrus and dovecot from scratch and dovecot seems to be 
realy fast !

-------------- next part --------------
A non-text attachment was scrubbed...
Name: mathieu_kretchner.vcf
Type: text/x-vcard
Size: 258 bytes
Desc: not available
Url : http://dovecot.org/pipermail/dovecot/attachments/20080812/830f9bbc/attachment.vcf