Howdy,
Need a little ASAP action, here!
We have 2 servers setup with mercury for one organization's email (ie. one domain). What we want is to have redundancy built-in such that if one mail server dies, the other one can pick-up where the first one left off.
Server 2 is currently acting as the preference=0 mail server in the dns settings and server 1 is preference=30. So what we want is to have server 1 forward any mail it receives for the entire domain to server 2. and if something happens to server 2, then we can stop that quickly and have server 1 collect mail for the domian.
the only other problem is that server 1 is collecting mail for several other domains at the same time.
while the dns settings are correct, and most mta's will correctly first try to send mail to server 2, it has been my experience that this does not occur all the time and that some legitimate email is attempted to be delivered to a higher preference #. this is the reasoning behind this setup.
thanks in advance!
gw