Having NTMail Coexist with ListManager

The way to have NTMail coexist with ListManager is to have NTMail listen to another port besides port 25 (the SMTP mail default port). Let ListManager listen on port 25, then tell it to forward non-ListManager mail on to NTMail.

Here are the steps to have NTMail and ListManager coexist:

1) Install ListManager and then make sure that it is not currently running.

2) Create an 'A' record in your DNS, which is an alternate name for the current machine. The mail that should be accepted by ListManager will be sent to this address. All mail delivered to ListManager which does not have this name will be forwarded on to NTMail.

For example, if your machine is currently called "mail" in your DNS, add another entry below it that has the same data, but with a new name, as in:

mail IN A 207.105.6.2 ; the original host name
listmanager IN A 207.105.6.2 ; the new "alias" host name

After this change, restart your DNS server.

3) Use the registry editor (regedt32.exe) to move NTMail port 26. The key you want to change is located at:

HKEY_LOCAL_MACHINE\Software\InternetShopper\Mail\Parameters\PortSMTPReceive

Change this value from "25" to "26"

The NTMail reference manual documents this option as:

This parameter defines which port the SMTP server will listen to when accepting email. The Internet Standard is to use port 25, but you may wish to run another mail server on the same machine and have it direct mail to NTMail at this new port.

4) Restart NTMail.

5) Start your ListManager server in the foreground, by clicking the "Run ListManager Now" icon.

6) In Utilities: Administration: Server: Server Settings: Network Settings: Receive Email, find the field that says "Forward Mail:". Type this in the Forward Mail field:

127.0.0.1 26

This instructs ListManager to forward non-ListManager mail to port 26, where NTMail is listening.

Now, find the field named "Mail Receive Rules" in Utilities: Administration: Server: Server Settings: Security: Bans. Type the name (or names) of the host names that ListManager should accept mail for. Any mail that comes in for ListManager, which is not addressed, to these hosts will automatically be forwarded to NTMail.

For example, if your machine was called "mail.mycorp.com" and you made an alias for it (in step 2) called "listmanager.mycorp.com", then in the "Mail Receive Rules" field enter this data:

@listmanager.mycorp.com

If you have multiple names for your ListManager server, which ListManager should answer, enter each of them here, separated by a carriage return. This means that all mail addressed to "@listmanager.mycorp.com" will be accepted and processed by ListManager, and any mail not addressed to "@listmanager.mycorp.com" will be forwarded to NTMail.

7) Type "shutdown" on your ListManager server console. Wait for ListManager to shutdown, then start it again, by clicking the "Run ListManager Now" icon.

8) Start your mail program and send mail to lyris@ your host name. For example, if your ListManager alias is "listmanager.mycorp.com", send mail to "lyris@listmanager.mycorp.com". A minute or two after sending your message, ListManager should have sent you a response back. Now, send a test message to a user on your NTMail Server to make sure that is working.