On Fri, 2020-06-05 at 07:32 -0500, Chuck Campbell wrote: > On 6/4/2020 8:58 AM, Pete Biggs wrote: > > > Fair enough, and I now understand the issues with root receiving and > > > handling emails. The problem with the alias is that ALL emails are being > > > sent out to my ISP, and on to the particular user. > > Even for local users that are in /etc/passwd? > Yes, I only have two local users, and email I send on the box ends up at > the outside ISP, then comes back via fetchmail, and procmail. I can read > it with IMAP from outside. I guess I'll live with this. So even if you do something like mail chuck at the command line (with whatever user has a local account) it still gets sent to the ISP? > I'm sure it is the RelayHost or RelayDomains that forwards the email > outbound to my ISP. relay_host is the host that mail is sent to if it can't be delivered elsewhere. relay_domains is a list of domains the host will relay mail to. > If I set up a local only account, those emails try > to go outbound as well, but are rejected as there is no registered user > of that name at my ISP. In /etc/postfix/main.cf what is 'local_recipient_maps' set to? Also, what about 'mydestination' If you look in /var/log/maillog what does a message log for a local user look like when sent using the mail command? P.