Re: Application level proxy for POP3/SMTP protocol

Maybe perdition is your salvation :-)

http://www.vergenet.net/linux/perdition/

Enjoy
   Jose Rey

On 6/1/06, zHihaO <[email protected]> wrote:
> Hi all,
>
> I'm in a sticky situation now because of the filtering of internet
> traffic out from China. Our users in china have got alot of problems
> connecting to our servers here to pop their emails and as a result, we
> have to get a server up in a datacentre in china and setup ssh port
> forwarding on the server in china. Here is the flow :
>
> chinese users --> china server (high port. eg: 10000 depending on which
> local server they are connecting to) --> ssh tunnel --> local server
> (POP3 port)
>
> The users in china will connect to our china server like this :
> china.mail.domain.com:50000. Port 50000 is actually an ssh tunnel to our
> local servers on port 110 here.
>
> Problem is we do have a hugh number of servers and it will be hard to
> keep track of the big number of ssh tunnels/ports opened up from china
> to our local servers. Any of you know of any good application level
> proxy that will redirect users based on the result of their dns records?
> For example, users connecting to the china server running this proxy
> will be redirected based on the IP address returned when the proxy do a
> dig on mail.domain.com or mail2.domain.com and redirect them promptly to
> port 110 of either mail.domain.com or mail2.domain.com depending on the
> dig result being returned.
>
> Any help will be greatly appreciated..!!!
>
> -zhihao
>