xs@kittenz.org xs@kittenz.org wrote:
with postfix, you can set up transport rules that allow you to bypass (or in your case, simply not use) dns MX records.
[...]
exim probably has something similar. [...]
Indeed it does. You probably need to make sure that you have a manualroute router working for the hostnames that you want to do that with, else it will probably try to use the dnslookup router which isn't going to work. I speak of Exim 4 here... Exim 3 is actually easier to mangle into doing this by making it do lookups "by_name" instead of "by_dns", IIRC.
I hope that's enough to get you going...