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Re: smtp proxy that takes in smtp auth?
Jul 11 2006 05:31PM
Gregory Hicks (ghicks cadence com)
> Date: Tue, 11 Jul 2006 09:20:26 +0800
> From: zHihaO <zhihao (at) root (dot) sg [email concealed]>
> To: focus-linux (at) securityfocus (dot) com [email concealed]
> Subject: Re: smtp proxy that takes in smtp auth?
> i'm looking at this senario :
> we have got a lot of clients in china who have problems connecting to
> our servers locally. For some reasons unknown, traffic to our network
> from china is being filtered by the government over there. So the ideal
> solution i'm looking at is to have a server in china herself to act as a
> proxy between the users there and the servers here since datacentre to
> datacentre connection is so much better. Since we have got multiple smtp
> servers for different clients, the proxy must be able to forward the
> credentials between the users in china and the smtp servers here
> locally. ideas anyone?
Let us assume that we have serverA.example.com outside China and
serverB.example.com inside China.
The MX records for example.com point to serverA. Mail is received for
<user (at) example (dot) com [email concealed]>. The /etc/alias file (or LDAP or NIS or NIS+ or...)
on serverA points to
user: user (at) serverB.example (dot) com [email concealed] (You need the same info on serverB!)
Sendmail (whatever MTA you want to use) then delivers the mail to
serverB. How you sync the files is up to you.
> Devdas Bhagat wrote:
> > On 07/07/06 12:29 +0800, zHihaO wrote:
> >> does anyone knows of a good software that works like perdition, but for
> >> SMTP? the ideal software will be a service running on port 25, listens
> >> for smtp connections, takes in the email user id and password, forwards
> >> the user credentials to the correct server based on a database lookup
> >> and allows the user to send mail out.
> > Why not have all servers share the same user database? SMTP does not
> > need to access a single mailstore.
> > What is the scenario you are looking at?
> > Devdas Bhagat
I am perfectly capable of learning from my mistakes. I will surely
learn a great deal today.
"A democracy is a sheep and two wolves deciding on what to have for
lunch. Freedom is a well armed sheep contesting the results of the
decision." - Benjamin Franklin
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be properly armed." --Alexander Hamilton
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