https://bugs.exim.org/show_bug.cgi?id=2499
--- Comment #24 from Wolfgang Breyha <wbreyha@???> ---
it seems that
srr.herrno = h_errno,
doesn't work if the DNS lookup was provided from the cache since h_errno is not
valid anymore.
IMO srr.herrno needs to be derived back from the dns_lookup result like I tried
in a patch I made while you did it yourself as well...
+dns_rc = dns_lookup(dnsa, US domain, rr_type, NULL);
+switch (dns_rc)
+ {
+ case DNS_SUCCEED:
+ rr_rc = NETDB_SUCCESS;
+ break;
+ case DNS_AGAIN:
+ rr_rc = TRY_AGAIN;
+ break;
+ case DNS_NOMATCH:
+ rr_rc = HOST_NOT_FOUND;
+ break;
+ case DNS_FAIL:
+ default:
+ rr_rc = NO_RECOVERY;
+ }
+
+srr.herrno = rr_rc,
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