Turns out the underlying library wants IPv6 addresses colon separated; but in contexts where a host address is being tested for list membership, exim passes it to the lookup as dot-separated. This is of course documented in the Spec, section 10.12.
Since IP addresses are the only things worth testing by this lookup, maybe I should internally translate them from dot to colon, before I pass them to libcork? -- Please don't Cc: me privately on mailing lists and Usenet, if you also post the followup to the list or newsgroup. To reply privately _only_ on Usenet and on broken lists which rewrite From, fetch the TXT record for no-use.mooo.com. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##