dovecot - Feb 2007 - Dovecot proxy question (hostname instead of ip)

Hello,

We are planning to use the Proxy feature of Dovecot,
but fail to implement it currently the way we would like to.

Reason is that proxy insists to have an IP-address as host :

Feb 15 15:43:24 proxy-test.widexs.nl dovecot: pop3-login: proxy(username):
mspool01-test.widexs.nl is not a valid IP

When I changed the query to force the IP-address of the above server, 
it works.

Would it be possible to make this work, but more important ... 
Are there any reasons NOT to make this work ? :))

Kind regards,

Wouter.

-- 
WideXS                          http://www.widexs.nl
Wouter de Jong                  System-Administrator
Tel +31 (0)23 5698070           Fax +31 (0)23 5698099
Bijlmermeerstraat 62,           2131 HG  HOOFDDORP, NL

On Thu, 2007-02-15 at 16:14 +0100, Wouter de Jong wrote:
> Feb 15 15:43:24 proxy-test.widexs.nl dovecot: pop3-login: proxy(username):
> mspool01-test.widexs.nl is not a valid IP
..
> Are there any reasons NOT to make this work ? :))
It requires DNS resolving and there's no way to do nonblocking DNS
resolving with libc. Although in login processes this wouldn't matter as
long as login_process_per_connection=yes. Then again in proxying use
that setting is often set to "no"..

Nonblocking DNS resolving could be done with an external library, or I
could of course implement my own. But since proxy is the pretty much the
only place where this currently could be useful, I haven't really
bothered to do either of those.

Or I could simply implement the blocking DNS resolving and you'll just
have to make sure that your DNS servers are always responding and doing
it fast enough not to cause problems.
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