Touch a mailbox for them in your mail spool, and give the file user and group permissions and ownership like the others in that dir. On Mar 16 10:48, lpeet@eccod.com wrote: > Ok, now that some of you convinced me to go to Postfix for my mail server, > I have aquestion for you: > > Postfix installed flawlessly, and is working great. Only trouble is, when > I add a new user tomy system, and try to send mail to them, I get the error "Mailbox not > found: 550 error - Userunknown". Sending mail works fine for users who were on the system > pre-postfix install. > Any ideas? > > > > -- JD Runyan Mid-Range Systems Administrator USDA NITC Kansas City