[Dovecot] Dovecot strong or not for a big Webmail architecture

[Cor Bosman]

Hi,

> > I know webmail.us use Dovecot, what is the most big dovecot architecture known ?
> > Do you think Dovecot can handle 1 million of active users in a good architecture ?
> 
> Yep... and we have 500K very active users on it.  We've scaled Dovecot horizontally without NFS, just lots of independent Dovecot server intances with smart proxy/mail-routing infrastructure around it.  It can easily scale to millions of users this way.  Just make sure you throw enough disks at it and you'll be fine, with or without NFS.

We have a similar amount of active users and dovecot is working just fine. We use
NFS for storage, but also use smart routing to make sure customers are always
on the same IMAP server so indexes can be on a local FS.

Cor