Hi,
I have a customer with a sun cobalt running Sendmail 8.10.2/8.10.2 and
we are phasing out the sun cube due to some limitations. So we have
installed a new centos 5.x server.
the format of our current emails are username@xxxxxxxxxx and the new
format will be name.lastname@xxxxxxxxxxx We have 1600 accounts.
Both server are in the LAN.
The MX record that the world sees, point to our current AV/AntiSpam
appliance, then our AV appliance forwards to the mail server (its a
trendmicro IMSS)
The AV appliance lets me define rules that emails for
username@xxxxxxxxxx should be sent to the mailserver with the cube,
and it also let me define a rule for name.lastname@xxxxxxxxxx to be
sent to the centos machine, so I have covered the "from internet"
inbound email issue.
going out to the internet, both servers can send emails perfectly.
However,
Since both servers will "answer" to the same domain, i need some
guidance as to how to
1- If user hosted on the Sun sendmail Cube sends emails to
name.lastname@xxxxxxxxxx, make the Cube forward/send the email to the
Centos machine.
2- If user hosted in centos, sends email to username@xxxxxxxxxx, make
the POSTFIX forward/send the email to the Cube machine.
Due to internal regulations i must say that:
1- users cannot be moved all at once.
2- centos machine must use postfix - not sendmail. I can however,
install sendmail on centos and make it listen in another port other
than 25 if some solution arises that needs sendmail in both sides.
Anyways, any guidance as to how to solve this mess is welcomed!!!!
Thanks,
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Erick Perez
Panama Sistemas
Integradores de Telefonia IP y Soluciones Para Centros de Datos
Panama, Republica de Panama
Cel Panama. +(507) 6694-4780
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