Re: Proper ACL condition to block failed rDNS lookup
Bill Cole via Exim-users <[email protected]>
| Newsgroups | gmane.mail.exim.user |
|---|---|
| Message-ID | <[email protected]> |
On 2025-06-09 at 13:13:39 UTC-0400 (Mon, 09 Jun 2025 17:13:39 +0000) Slavko via Exim-users <[email protected]> is rumored to have said: > Dňa 9. júna 2025 12:47:41 UTC používateľ Bill Cole via Exim-users <[email protected]> napísal: > >> >> [...] >>> dig -t ptr 8.8.8.8 >>> >>> ;; QUESTION SECTION: >>> ;8.8.8.8. IN PTR >> >> That's a query for a PTR record with the *NAME* 8.8.8.8.in-addr.arpa. It will ask whatever nameserver you have configured for the system. > > No, it is query for PTR record with NAME 8.8.8.8 (without > in-addr.arpa). Correct. dig(1) needs the full name or "-x" while host(1) treats the qualification as implied by a 4-octet argument. -- Bill Cole -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## [email protected] ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/