> It is POSSIBLE to set such a way that whatever there is a mail to our
> company (user@sister.com.my) that go to the parent company, it will foward
> the mail to our company mail server? (since we have our own internel mail
Yes, of course.
(Your diagram was junked in transit, and I may not have grasped all
the details of your setup.)
> server) and whatever mail to user@parent.com.my remain in the parent mail
> server. If it can be done, HOW? And another thing is that how the mail
There are several ways. To me your setup is a natural for UUCP.
> going to foward the mail to the sister company during at night (the line is
> not UP) if there is a mail to one of the user in sister.com.my?
Do you mean you can't bring it up by dialling parent? If so, the
mail is obviously NOT going to forward during the night.
I don't understand why movement of mail is slow. You seem to be
under-using a fast (64k) line, which is more than you need just for
e-mail. If people are sending huge attachments, see if they can do
some things differently. E.g. blindly sending Microsoft bloat in
the form of oversize Excel spreadsheet attachments is inconsiderate
of other e-mail users in your situation. You could try complaining
to Microsoft about this bulk.
You can also use the MTA to restrict the size of mail sent to any
maximum you like - e.g. 64 kB.
I don't understand why sister does not have DNS. If sister has a
TCP/IP LAN, sister needs DNS. Ask parent to register your domain
name and accept e-mail for it. This could be done simply if your
domain is a subdomain of parent's. The parent would ask its name
servers to add MX records for the hosts in the sister.parent.com.my
domain. And config its mail server to accept such mail and invoke
the uucp mailer for it.
Install sendmail and Taylor UUCP on Linux hosts at both ends of the
dialup link, i.e. in parent and in sister.
Study the documentation re configuring these systems. Get
"sendmail", 2nd Edition by Costales (O'Reilly, the "Bat Book").
Also get the "Crab Book" from the same publisher. The UUCP
documentation is on GNU sites.
--Mike
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