Configuring exim to handle emails

starting some notes for configuring outbound email thru a host, to allow for sending internally to a local host (single one) and have it email thru the isp email host, or whatever

https://debian-administration.org/article/140/Handling_mail_for_multiple_virtual_domains_with_exim4

http://blog.bigsmoke.us/2008/08/03/configuring-a-debian-satellite-exim-server

Tidbit about dc_other_hostnames:

BTW, ‘dc_other_hostnames’ is colon (;) seperated.