>> Put an SMTP service on your system in China for the local users there to
use to send outbound. Tell them the name (or IP) of the system to use. Have
them use AUTH, and have a local copy of your user database there to verify
the AUTH. The system they use to send outbound via need have no connection
with the domain name of their account.
I am looking to do it through Authenticated SMTP using either PAM or
Password. The only concern what will be FROM address on recieving end ? I
mean how the recieving email will know from which domain email comes from.
Through this i think From address can be changed easily that email sent
from @xyz.com rather than original domain user @example.com.
On Mon, Feb 13, 2012 at 10:28 AM, Muhammad Irfan <mirfan1981@???>wrote:
>
> We are using Exim MTA on dedicated server hosted on US data center with
> CENTOS 5.
> Our users are in two regions in US and China.
>
> [...]
>
>
> Because china users have to connect to
> US DC SMTP server and because of slow connectivity issues users suffers
> alot.
>
>
>
> >> Put an SMTP service on your system in China for the local users there
> to use to send outbound. Tell them the name (or IP) of the system to use.
> Have them use AUTH, and have a local
> copy of your user database there to verify the AUTH.
> The system they use to send outbound via need have no connection
> with the domain name of their account.
>
>
> OK, so i will install exim on china DC machine and will inform china users
> to use china mail IP address to send email. But how to use AUTH ? How to
> configure AUTH ? Also for local copy of user database means should i need
> to create mail boxes for china users locally also ? Is there any howto
> document available for that ?
>
>
>
> Also we don't want to switch china user mailboxes to China we need to keep
> all user mailboxes to primary MTA.
>
>
> >> Not sure why not, but it's a separable issue from the outbound.
>
>
> The only reason that i don't want to separate user mailboxes locally i.e.
> china user mailboxes on china exim server and US user mailboxes to primary
> MTA is i don't want to use different domains i.e. all users emails on same
> domain regardless of china or US. e.g. china@??? and
> usa@???
>
>
> Also I need to know how to do it to receive emails ?
>
> >> Have your user-database know where each user wants their mail (US or
> China).
> Look that up in the routers, and deliver to file (if on the correct
> machine already)
> or by smtp to the alternate machine.
>
>
> Need to check US mail server router section ? Infact i am not sure how to
> implement this how to deliver to file.
>
>
> >> Tell your users what name (or IP) of system to use for retrieving their
> mail.
> Run IMAP services on both your systems. POP also, if you must, and a
> webmail
> if you wish.
>
>
> I will inform china users to change POP settings in email client and use
> china mail server IP but how it works if mailboxes resides on Primary mail
> server on US ?
>
>
> Both systems need to accept mail for your domain. It's probably simplest
> to keep your US system named in DNS as the primary MX for your domain
>
>
> I thought i mixed up entirely. It would be great help if you identify all
> suggestions in steps and in sequence to improve send / receive emails from
> china where users having mainly face problems when sending emails via
> attachments.
>
> Thanks in advance for your help in this regard.
>
