Exim Configuration Editor question

[drsceifers]

Long story short, we are trying to reject and mail for a domain of ours that does not have an MX record in DNS. We went to Exim mailing list and someone suggested we use the command:

"mx_domains = *"

We just want to drop any connections to domains without an MX record.

So,

Where do I place this in the configuration to achieve said goal? I've never written an Exim ACL before & I don't want to break my config.

Has anyone written an ACL that can tell me how to add it in?

Thanks

[drsceifers]

Does anyone have a resource I can approach about this?

We really need to get our Exim set up and it's starting to affect our schedule pretty badly.

[cpanelkenneth]

You stipulate mx_domains as an option to the dnslookup router. More information on that is available in the Exim documentation: http://exim.org/exim-html-current/do...html/ch17.html

This portion of the exim.conf file is not modifiable via the Exim Configuration Editor. As such it requires manual modification of the file as well as a mechanism to preserve the file across cPanel updates.

[drsceifers]

Thanks Kenneth,

In the last few hours, I have found out mx_domains is about outgoing mail. The original information I was given was incorrect.

I am working on an ACL to do the right thing.

Thanks again!

[drsceifers]

# matches any domain that has an MX record pointing to one of the local host’s IP addresses other than 127.0.0.1
domainlist local_mx_domains = @mx_any/ignore=127.0.0.1

acl_smtp_rcpt = acl_mx_only

acl_smpt_rcpt = check_recipient

...

acl_mx_only:
# Drop those not having an MX record for Recipient
drop message = That is not a valid email for this domain
!domains = local_mx_domains

My problem is I think the hard coded acl_smpt_rcpt will override my version, rather than add to it. I have also tried other acl_smtp_XXX keys, but I need to make this check during acl_smtp_rcpt because I need the recipient to be populated.

Any thoughts?