CentOS - Dec 2007 - Postfix Configuration Setup for 2+ domains

Hello,

I have a client that wants to have a dedicated smtp sending host. But
they have 2 separate domains then that don't want to have share IP
address. The reasons from this is long and drawn out.

Is it possible to setup postfix in a virtual host config, like apache
for example, such that, domainA.com listens and sends on one IP address
and domainB.com listens and sends on another address.

This host is simply a email forwarding host, so no user accounts are on
the server, they have about 5 servers serving websites for 2 domains and
subdomains and want email coming from a common source for both domains
(this will be the relayhost for the web servers).

I have it setup to listen to 2 ip addresses but as of now I get:

220 smtp.domainA ESMTP Postfix

on both addresses. Is there a way to have one address show as:

220 smtp.domainA ESMTP Postfix

and the other:

220 smtp.domainB ESMTP Postfix

More importantly, email send via 1 should look like it came from that
domain and email sent to the other look like it came from its domain.

I can find info on virtual domains, but its geared for receiving email
for multiple domains.

Thanks,
Rick

Rick Barnes wrote:
> Hello,
> 
> I have a client that wants to have a dedicated smtp sending host. But
> they have 2 separate domains then that don't want to have share IP
> address. The reasons from this is long and drawn out.

try the postfix list first.

-- 
Karanbir Singh : http://www.karan.org/ : 2522219 at icq

> I have it setup to listen to 2 ip addresses but as of now I get:
> 
> 220 smtp.domainA ESMTP Postfix
> 
> on both addresses. Is there a way to have one address show as:
> 
> 220 smtp.domainA ESMTP Postfix
> 
> and the other:
> 
> 220 smtp.domainB ESMTP Postfix
You can achieve that in master.cf.

IPA:smtp      inet  n       -       n       -       -       smtpd
         -o mail_name=smtp.domainA
IPB:smtp      inet  n       -       n       -       -       smtpd
         -o mail_name=smtp.domainB
> 
> More importantly, email send via 1 should look like it came from that
> domain and email sent to the other look like it came from its domain.
> 
You have to be a bit more clear on this. As an example, do you want 
userA uses YahooA via your server to have his YahooA address rewritten 
to his userA address and emails from userA must also leave your box via IPA?

Or do you want if userA sends mail via IPA with another domain's addy 
other than userA, reject?

Or do you want postfix to log domainA emails with smtp.domainA name and 
likewise domainB emails as smtp.domainB?