I am trying to set up a backup MX server for many domains. I need to
not have to maintain a separate list of domains in the server config, so
I'd like it to relay based on MX.
In my config I have...
#
primary_hostname = mx2.dotcomimaging.com
#
domainlist relay_to_domains = @mx_any
#
...and in my ACL I have...
#
accept domains = +relay_to_domains
endpass
verify = recipient
#
I am testing with the domain dotcomimaging.com, which has
"mx2.dotcomimaging.com" as the secondary MX record, but messages are
always getting rejected. So, I have two questions...
1. Is there a way I can test specifically why it is getting rejected?
2. Could it be that because the exim server is behind a NAT, although
the hostname mx2.dotcomimaging.com will be in the MX list, the private
IP address 192.168.100.116 will not?
Any help much appreciated.
Regards, Adam Bown.
