smtp routing

[cyberspirit]

Here is what I would like to accomplish:

I want to use my exim as a backup smtp server for a certain domain. That means I need to configure it to accept mail for domain.com and also to let exim know to forward all mail for domain.com to server.domain.com.
I realize that this could be done with some mx record tweaking in DNS but this is not an option. Also, someone suggested in the forum to enter the domain into /etc/remotedomains but this file is not even used by the exim conf at the moment.
So is there an easy way to do it?

thanks

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[mickeymouse]

Dear cyberspirit,

You can try this.
Add the following lines in exim.conf

Use this as your first router:
special:
driver = manualroute
transport = remote_smtp
route_list = the.particular.domain the.other.host

You will also need to adjust the ACL for incoming SMTP so that this domain is accepted for relaying. If you are using the default configuration, there is a domain list called relay_domains that is set up for this.

For more details,refer

http://www.exim.org/exim-html-4.20/doc/html/FAQ_3.html#TOC127

Regards,

cPanel.net Support Ticket Number:

[Jemshi]

In cpanel server, adding the host to

/etc/secondarymx wont do the purpose ?

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[cyberspirit]

Mickeymouse,
Where would you add this additional router exactly in the exim configuration?

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[cyberspirit]

Ok, here is what I did and it works perfect:

In the advanced mode exim config editor in whm I added this line to the first open space right after "cpanel exim 4 config":

domainlist secondarymx_domains = lsearch;/etc/secondarymx


Then I went further down to the "Routers Configuration" and added this right after "order does matter"

special:
driver = manualroute
domains = +secondarymx_domains
transport = remote_smtp
route_list = * host.domain.com

(replace host.domain.com with the smtp server that should receive all messages from these domains).

Now all you have to do is to add all the domains you want to function as a backup mx to the file /etc/secondarymx
and you are all set!

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