Viktor Dukhovni: > So did you add a correct setting of "mydomain = ..." to main.cf > with "mydomain" some actual domain under your control? > > > > > Should I set it? How does that change my otherwise working > > > > configuration which handles mail for 4 domains. > > > > > > I thought that's what I said. > > > > :) well, we people from brooklyn sometimes need to be told twice. > > I hope twice was enough. Add a correct "mydomain" setting to > main.cf.
That will work. Another solution is setting append_dot_mydomain=no, so that user@localhost will become u...@localhost.com. Wietse