I get occasional errors with my mail server, especially with my outgoing mail. I checked the "mail" log and found a lot of this error: and the following in the mail.err file
Ok, then a missing fam daemon seems to be not the source of the problem. Are you sure that your harddisk is not full: df -h or that the quota of a user is full: repquota -avug
I don't think so. There is still plenty of space available, and all of the users are set to unlimited space. I have noticed the same outgoing mail server error that I get occasionally when I'm on using a public internet connection.