Having SLMail Coexist with ListManager

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

Here are the steps to have SLMail and ListManager coexist:

Move SLMail to another port

* Open up the SLMail control panel, and go to the tab labeled "Access". Locate the entry labeled "SMTP Port". This is currently set to 25. Change it to be 26.

* Restart SLMail.

Install and Configure ListManager

* 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 SLMail.

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.

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

* 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 SLMail is listening.

Now, go to Utilities: Administration: Server: Server Settings: Security: Bans and find "Mail Receive Rules". 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 SLMail.

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 "ListManager host names" field enter this data:

@listmanager.mycorp.com

If you have multiple names for your ListManager, 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 SLMail.

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

7) Start your mail program and send mail to lyris@ your ListManager hostname. For example, if your 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 SLMail Server to make sure that is working.