[Dovecot] director: non standart ports at backends

Timo Sirainen tss at iki.fi
Mon Jun 11 15:47:50 EEST 2012

Looking at your old mails, you seem to be using passdb static for director, but userdb sql? So you could switch to:

passdb {
 driver = sql
 args = /etc/dovecot/dovecot-sql.conf

password_query = select 'y' as proxy, 'y' as nopassword, if('%a'=143, 1430, 9930) as port

where you'd change the if() to something that handles %s=imap vs %s=pop3 vs %s=lmtp and %a=143 vs %a=993 vs %a=110 vs %a=995. Maybe a "case" statement would be less ugly. Or simply make it a real table in sql. Anyway, that's the basic idea.

On 11.6.2012, at 15.39, Костырев Александр Алексеевич wrote:

> thanks Timo, for you time
> but I still don't get it)
> should I return "port" with just "port_num1,port_num2" value or how?
> I've tried to google an example but with no success.
> -----Original Message-----
> From: Timo Sirainen [mailto:tss at iki.fi] 
> Sent: Monday, June 11, 2012 11:01 PM
> To: Костырев Александр Алексеевич
> Cc: dovecot at dovecot.org
> Subject: Re: [Dovecot] director: non standart ports at backends
> On 11.6.2012, at 12.27, Костырев Александр Алексеевич wrote:
>> hello,
>> I'm trying to figure out how to proxy pop3 and pop3s that listens on non-standart ports at backends.
>> For example, pop3 is at 1110 and pop3s at 1995 (on backend side).
>> is it possible? 
>> how should I separate this ports in director's config?
>> it's easy for one port:
>> for example lmtp - you just use passdb in protocol lmtp {}
> The passdb needs to return the "port" field. You can't use static passdb for this, since it has no conditionals and you can't do per-port configuration. Maybe use sqlite (simply to use it as a scripting engine - empty database) or checkpassword as your passdb.

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