I thought I'd have a shot at this myself. Patching this one line fixes the
problem. Please adjust as you see fit.
Regards,
James
--- exim4-config.config 2020-02-14 15:02:05.000000000 +0000
+++ exim4-config.config.new 2020-02-25 09:41:17.655030803 +0000
@@ -123,7 +123,7 @@
db_set exim4/dc_localdelivery \
"$(convert_transport_to_long ${dc_localdelivery})"
fi
- db_fset "exim4/dc_other_hostnames" mailname "${dc_mailname_in_oh}"
+ db_fset "exim4/dc_other_hostnames" mailname
"${dc_mailname_in_oh:-false}"
}
# ipv6: replace double colons in colon-separated host lists with umlaut-o
