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dirkdekker

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With one DSL Ip-address and 2 domainnames I like to forward each MX-domainname-record to different Mailservers on the LAN. So : mail.firstdomain.com is forwarded to MailServer-1 and mail.seconddomain.com is forwarded to MailServer-2. I use the program Pound; a reverse proxy, load balancer and HTTPS front-end for Web server(s)( http://www.apsis.ch/pound/index_html ) . If anybody knows a program for this issue and report it here I'm very thankfull.
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freakinvibe

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Pound has nothing to do with your problem, it is a web proxy only, not dealing with the SMTP protocol.

If you have only one IP address, you can only have the two MX records point to that address. It would be the task of an SMTP relay at that address to route the mails to the correct mail server on the LAN.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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dirkdekker

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Thanks for the reaction. You are right. The program pound is not involved and only for the rerouting of http (p:80) and https(p:8080) to different Webservers with different websites. So I mentioned the program pound, running on a debian server, as an example to make up your mind.
As it is possible to write a http-reverse proxy service then it must also be possible to write a mx-dns-reverse proxy service as well.
I'm seeking in literature and in Cisco sites, but cannot find this feature. maybe you know?
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freakinvibe

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Why would you need a mx-dns-reverse proxy?

I suggest you need a simple SMTP relay that analyses the recipient address and bounces the mails to the correct mail server. You can use the built-in relay on a Windows Server

http://support.microsoft.com/default.aspx/kb/293800

or use a third-party product.


Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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dirkdekker

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Thanks, its a great example and usefull for my excersice.
Do You know any third-parthy product names?
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freakinvibe

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No, nothing I have used myself, but googling for "smtp proxy" might come up with some suitable results. The issue with many of the proxies out there is that they have too many features like anti-spam. You would only want a simple proxy.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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microalps

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Use Kerio's built in feature. Forward port 25 to Server #1. Create both domains on Server #1. For domain #2, set up forwarding as detailed in the Kerio MailServer Manual
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