Tom Kistner wrote:
>> Why doesn't exim support XCLIENT? Was the issue discussed be the
>> developers? Or did noone start to implement it?
>> You're the first one requesting it. Most users seem to let their Exim
>> installation face the internet. Also they don't use closed-source email
>> mangling facilities. :)
XCLIENT is very useful for some people. For example you can run nginx
in mail proxy mode. It will handle incoming SMTP connection, ask external
server where to forward it and do actual proxy job. nginx supports XCLIENT
extension. The benefit is if you have a very large user base
(you are running free web-mail) you can store you mailboxes on multiply hosts.
This solution is easy to scale, you can run any number of storage servers with
exim doing virus/spam checks and imap for mail access.
http://blog.fastmail.fm/2007/01/04/webimappop-frontend-proxies-changed-to-nginx/
--
Sergey Smitienko