You still need in some sense one coherent file system to store and retrieve the mail messages. Although a load-balance cluster would still be quite useful for rejecting the bulk of unauthorized connections.
I am sure in many cases a small/medium server can in fact sit and function quite adequately behind a large enterprise load balancing firewall and proxy, given the typical quantities of spam "out there" and the large number of bad connections typically attempted on any given system.
On Thursday, October 20, 2022 9:19:59 PM AKDT, Zhang Huangbin wrote:
On Oct 21, 2022, at 4:19 AM, Antonio Leding tech@leding.net wrote:
My understanding is that Director is targeted toward large enterprise mail installations that will incorporate several servers for a given function. In such an environment, Director would be the fore-person\traffic-cop keeping things organized & squared-away.
Director is used when you setup frontend servers in a load-balance cluster, proxy imap/pop3/lmtp/managesieve requests to backend Dovecot servers.
I setup load-balance cluster for clients with HAProxy + KeepAlived + Dovecot Director running in frontend servers, so sad we have to find an alternative to replace Director in such case.
It's not about "small/medium" servers, but the demand of imap/pop3/lmtp proxy service, especially in load-balance cluster.
Zhang Huangbin, founder of:
- iRedMail: Open source email server solution: https://www.iredmail.org/
- Spider: Lightweight, on-premises Email Archiving Software: https://spiderd.io