Topic: E-smith to replace M$ Exchange

[Mango]

The company I work for is spliting up into two companies and One company is taking the M$ Exchange server leaveing the other company with out an email server. So I am going to install an E-smith server for that company.
What I want to do is install an e-smith server now as a backup to the M$ Exchange server (please forgive me) By doing this I hope to accomplish 3 things:
#1. When the Exchange server crashes (it does) email still comes into my network but to the esmith server, when ever the exchange server comes back online the esmith server will than pass all the email to the exchange server (is this called mail baging?).

#2. create all the users who are going to be using this server after the split.

#3. Replace the M$ Exchange server

[Bobby]

Great idea!

Anything to replace MSE! :}

Doing a similar thing now, but migrating all at once.

Do you have multiple public IP addresses for this venture, or do you only care about internal mails?

-Bobby

[Rob Hillis]

First, take a look at http://www.e-smith.org/docs/howto/emailtransition-howto.html

This will be a good guide as to how to change over to SME for e-mail handling.  As for handling mail for your M$ Exchange server, I *beleive* (and I hope someone will back me up here) the best solution is to create a backup MX record pointing to your SME server, and then create a template fragment (e.g. /etc/e-smith/templates/var/spool/smtpd/etc/smtpd_check_rules/21AllowExchange) containing the following, assuming the domain that exchange is handling is foo.com...

# Relay mail for the exchange server
allow:ALL:ALL:*.foo.com *@foo.com

Once this file has been created, run /sbin/e-smith/expand-template /var/spool/smtpd/etc/smtpd_check_rules and restart qmail using service qmail restart.

This *should* allow SME to relay all mail for foo.com.  I caution that I have not tried this myself, and cannot guarentee that it will not cause SME to eat all mail it receives... (i.e. use at your own risk, unless someone else confirms that I've got it right)

[Mango]

I have multiple public IP addresses and I care about both internal and external email

[Mango]

Thanks I will try this

[Paul]

Did you get E-smith mail server working??

[mango]

Yes we did