On Tue, Apr 07, 2026 at 15:18:47 -0400, Haines Brown wrote: > On Tue, Apr 07, 2026 at 01:46:03PM -0400, Greg Wooledge wrote: > > Start by looking at which domains you've declared to be local. > > Does this include both "histomat.net" and "iskra.histomat.net"? > > Or just one of them? Or neither? > > Is local domain name the same as what exim configuration calls > system mail name? In the field put Iskra@hstomatlnet. There is no > place for an additinoal domain name. Pehaps it can be provided in > answer to other distinations. Is that so? I usually leave blank.
I don't use exim myself, so I did a web search. <https://www.exim.org/exim-html-current/doc/html/spec_html/ch-domain_host_address_and_local_part_lists.html#SECTnamedlists> appears to contain the documentation for this. Thus, you might do something like grep -r local_domains /etc/exim* and see what pops up. > > Next, look at how your "postmaster" is configured. Is it an alias? > > Is it a real user? If it's an alias, what address does it point to? > > Exim configuration does not provide for identifying who is > postmaster. I do create a /root/.forward file with my simple > address [email protected] in it. I suppose that makes me > postmaster, but this is not what you are getting at. Most likely there is a file with a name like /etc/aliases or /etc/mail/aliases or /etc/exim4/aliases or something similar. Perhaps it says "postmaster : root". That might cause your /root/.forward file to be used. I don't know exim, but it seems possible. If you change the /root/.forward file and get different behavior, then you'll know your hypothesis was correct. In any case, once you *understand* your configuration, the second step will be to change it to behave how you want it to. If you're unable to make the [email protected] mail server accept your bounce messages, then you definitely shouldn't be redirecting postmaster and other system-level aliases to that address. You'll have to find a different destination for them. Perhaps a local mailbox.
