Hi, i have similar problem like this:

"On Mon, 2013-05-27 at 23:40 +0300, Ibrahim Harrani wrote:

Hi,

I am running dovecot on 3 qmail-ldap server backend. dovecot configured to use auth_pop3 wrapper for authentication. Users logins to the qmail-ldap pop3&imap pools randomly. If a user is mailhost is not the connected server, dovecot proxies the connection to the user mailhost. In this case, I can not get the original client IP address via post-logins script on user host. I see only the first connected server IP as $IP environment.

Set login_trusted_networks setting pointing to the proxies' IPs/network and you'll get the original IP. Requires v2.1.2+ to work with pop3 proxying."

What can I do in case if dovecot proxy is installed ona same server ?

Setting of login_trusted_networks causes issue like:

dovecot: imap-login: proxy(xxx): Login failed to xxx:9993: [UNAVAILABLE] Account is temporarily unavailable. dovecot: imap-login: Disconnected (internal failure, 1 successful auths)

on port 9993 works service dovecot imap on port 8993 works service courier imap proxy works on 993