On Tue, 7 Apr 2026 11:50:49 -0400 Haines Brown <[email protected]> wrote:
> On Tue, Apr 07, 2026 at 04:27:39PM +0100, Jonathan Dowland wrote: > > On Tue Apr 7, 2026 at 4:00 PM BST, Haines Brown wrote: > > > My current host name is not iskra but Iskra. The host ikra is a > > > different installation of the operating system on a different > > > drive. Pehaps I need to boot it, purge and reinstall Exim from > > > it. > > > > In the message above, I don't see an ikra, only iskra and Iskra. > > I'm not sure that Exim will differentiate between hostnames that > > differ only in capitalisation. Then again, maybe it will! > > > > It looks to me like your local exim believes @histomat.net is not > > handled locally, and is trying to send mail for @histomat.net > > "off-site" (although it may be connecting back to itself > > unwittingly). Should this system instead be treating @histomat.net > > as local? > > Sorry for the typo. It is iskar/Iskra. Never had a problem before > witn different sets pf hostnames on different hardware. > I'm fairly sure that neither the SMTP protocol nor exim in particular distinguish cases in email addresses. I have a feeling I found this for sure with exim4, but I've run it for so many years I can no longer remember the details. I know you've found the problem, but this may help someone else. -- Joe
