[Dovecot] Feature Request for Proxy

[Ed W]

Hi,  Quick feature request for the proxy function:

I have a couple of machines which are all customer facing and customer 
mailbox lives on any one of them.  Customer can login to any machine and 
the proxy feature then forwards them to the correct machine (often the 
machine they are already connected to).  However, right now if the SQL 
query simply returns the IP of the correct machine, and this happens to 
be the same machine that the connection is already on, then we get the 
auth process stuck in an infinite loop (and generating a lot of log 
files...)

The quick fix is to customise each installation and add some kind of 
WHERE clause to change the results IF result is already the same as the 
machine we are on.  However, this is error prone when setting up new 
machines and it's easy to forget or make a typo adjusting the config 
files.  In my case I am using vservers and it's quite neat to be able to 
simply copy the whole image and fire it up on a new IP to test an 
upgrade, etc, hence easy to mess up adjusting the conf files when 
creating a new image.

Any suggestions on how this could be done more dynamically, or else 
could I raise a feature request that the auth process somehow realises 
when it's being forwarded to an IP address that it's actually listening 
on already already (ie it's a request which loops back to itself), thus 
simplifying the config files?  I haven't cracked open the code, but it 
sounds somewhat possible to check the list of IP addresses we are 
currently listening on and check that the proxy dest isn't among them?

Cheers

Ed W