Hugh E Cruickshank wrote: > CentOS 4.8, sendmail 8.13 > > Hi All: > > I have a couple of questions regarding the routing of outgoing emails. > I have spent several hours doing Google searches but I have not come > close to what I am looking for. If someone can give me push in the > right direction I would greatly appreciate it. > > We currently have three domain names (two for our development company > and one for our production company). We have one mail server in our > development office that hosts all three domain names. Actually we > just treat the three domain names as aliases of the mail server (via > the local-host-names file and I do not see a need to change this. What > I would like to do is route (relay?) any outgoing emails that are > from emails addresses using only one of those domains to a separate > SMPT server. > > 1. Is this possible? > Sorry, last I checked, there is no sender-based routing support in sendmail. You cannot even try to create rulesets to get that. > 2. What is it called? > sender-based routing. I suggest switching to postfix or exim. > 3. Can you provide examples or links to relevant docs? Not for sendmail.