[Dovecot] Dovecot as a POP3-/POP3SSL-proxy in front of exchange 2003

[Steffen Kaiser]

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On Mon, 16 Mar 2009, south africa wrote:

> Is it possible that Dovecot act as a POP3-/POP3SSL-Proxy, 
> "LDAP-authenticate" all user logins to a Windows 2003 domain controller 
> and forward then all POP3-connects to a single Exchange 2003 server?

About the auth search the archives for auth and ad, e.g. you'll find 
"[Dovecot] Dovecot authenticating---> Active Directory Win2003". There 
you'll also find a discussion, why not do so :) but use kerberos instead.

> Could someone give me some advices or a link for howtos for this solution?

Google "dovecot proxy ldap" and you'll find: "[Dovecot] Ldap Proxy" as 
well as "[Dovecot] proxy mode and ldap" quite easily.

> The howto on www.dovcot.org (http://wiki.dovecot.org/HowTo/ImapProxy) 
> does not fit in my situation because it prefere a mysql server and not a 
> LDAP-server/domain-controller.

Actually, this is the doc, that applies to you. It says:

Have your passdb return: uid, host and proxy. nodelay and nologin is good, too.

http://wiki.dovecot.org/AuthDatabase/LDAP/Userdb
Describes how to add static fields to a LDAP pass_attr/user_attr= query, 
e.g.:

pass_attrs =
uid=user,userPassword=password,mailHost=host,=proxy=yes,=nologin=yes,=nodelay=yes

The syntax is roughly:

ldapAttribute=DovecotData=staticValue

if ldapAttribute is an empty string, the staticValue is used. It's kind of 
confusing sometimes.

Bye.

- -- 
Steffen Kaiser
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