smtp problem

[massoo]

Hi,

I have a scenario where there are 100 users who are listed on my internal mail server(mail_internal.xxx.com / this is not publically accessible MX host) and 50 users on my top level mail server (mail.xxx.com - MX host).

In order to process mail functionality to the 50 users who are having accounts in MX host, i need to open port 25 in my lan which is causing much trouble of being listed in XBL/SBL / spamhaus.org

What i would like to have is that these 50 users to have access to the port 25 selectively so that they can access their mails through the MX host and not to the other internal users.

for your info.. I have a DHCP setup and DHCP is served to all of them.

Thanks
Shann

 

[NetworkGhost]

Well if you open up port 25 that shouldnt be a problem if your mail server is locked down to block smtp relay. You can easily do this with Exchange.

 

[RothkoConsulting]

But make sure you remove FIXUP for SMTP before you do this!

This little gem cost me a few days hair tearing before I found it!

Onmly seems to be an issue with Exchange SMTP Servers.

Phil.