On Wed, Apr 27, 2022 at 01:42:05PM +0100, Brian wrote: > On Wed 27 Apr 2022 at 08:05:46 -0400, Haines Brown wrote:
> > If I understand correctly, which is always in serious doubt, it is > > exim that constructs the Sender: line by combining /etc/mailname and > > $LOCALHOST. Is this so? > > No. exim4 uses what is in /etec/mailname as the MAI FROM: (the envelope > from). Thanks for the clarification. > > These values are present: > > > > $ nano /etec/mailname > > lenin.histomat.net > > lenin.histomat.net appears to be unrouteable. How a remote system would > deal with that is anyone's guess. I do not understand. What should /etc/mailname look like? I suspect it should simply be histomat.net and wonder how the host name got in there. I changed it to the latter value but still get 5.5.1 Protocol error from online email tester. Perhaps I need to restart networking.
