Hi,
I am using sendmail.
I need to do the following: Send all internal emails to one relay, send to a particular external domain via a relay that required authentication.
Could someone please advise on configuration? I tried one possibility but it failed.
Expecting a precise, quantitative solution requires a precise, quantitative specification.
A fuzzy spec like above will get you a generic answer.
this Article says more about sendmail to specific host. Please read it.
Force sendmail to route mail to specific hosts or mailserver - nixCraft