https://bugs.exim.org/show_bug.cgi?id=1395
--- Comment #10 from Wolfgang Breyha <wbreyha@???> ---
Good question;-) I thought it is the part
-----
if ((previous = tree_search(tree_dns_fails, node_name)))
{
DEBUG(D_dns) debug_printf("DNS lookup of %.255s-%s: using cached value %s\n",
name, dns_text_type(type),
previous->data.val == DNS_NOMATCH ? "DNS_NOMATCH" :
....
-----
since I catched
15:33:03 3905 DNS lookup of .....xrblzonex.uni***.ac.at-A: using cached value
DNS_NOMATCH
This zone has a TTL of 60 and negative TTL of 5 in the SOA. And there were at
least 120 seconds in between the two lookups.
But git says that this is quite old code from PH. I'll do some further
debugging and report back.
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