Topic: multiple mail servers at one site

[Allan Pritchard]

Hi All

Can anyone point me the right direction (or let me know if its even possible)

I run a SME mail server at home for a volunteer Search and Rescue organization with over 100 users that simply forwards mail on to their personal address.
We use it extensively for groups, committees, operational members etc and has been working well for 6+ years

We now have another small volunteer organization using the system with a different domain, the server is set up to receive email from multiple domains
and is working but I would like to separate out the organizations and have a server each. I only have 1 static IP address at home, is there a way to configure
the system either at server level, router level or domain name level so email to user@xyz.com goes to server 1 and user@abc.com goes to server 2.

Cheers
Allan

[guest22]

Have you searched the wiki?

Maybe this helps http://wiki.contribs.org/Email#Deliver_email_for_one_domain_to_an_internal_or_external_mail_server


If you are at SME Server <=8.x, please consider/plan upgrading first to SME Server 9.x
Have you considered using Virtual machines (if not already)?

[Knuddi]

You can do as RequestedDeletion suggests, but then you will need a distribution server or have one of the organizations be dependent of the other.
 
From a mail server perspective a mail server needs to be able to receive on port 25 to function. With only 1 public IP that is going to be difficult with 2 servers unless you have an external services pick up the mail and send it to you on two different ports (25 and maybe 2525).

There are external services that act as MX handler (spam filters, etc.) and forward to your individual servers.

/Jesper

[guest22]

You can do as RequestedDeletion suggests, but then you will need a distribution server or have one of the organizations be dependent of the other.

Exactly. This is the catch in thinking of having 'separate' mail servers with only 1 public IP.

[Allan Pritchard]

Thanks for your suggestions I hadn't seen that particular wiki

I will do as RequestedDeletion suggests. I might add in a distribution server in the future.

Once again thanks for taking the time to respond my question and pointing me to some good info.

Cheers
Allan