Re: Proper ACL condition to block failed rDNS lookup
Markus Reschke via Exim-users <[email protected]>
| Newsgroups | gmane.mail.exim.user |
|---|---|
| Message-ID | <[email protected]> |
Hi!
On Sat, 7 Jun 2025, AC via Exim-users wrote:
> I want to block any connection that doesn't have a successful rDNS (logs
> report "no host name found") but searching around results in so many
> different variants of an ACL rule to do this.
I've got following in acl_check_rcpt (because I want to log/see the sender
and recipient):
# deny hosts without reverse mapping
deny hosts = !+relay_from_hosts
!authenticated = *
message = Reverse DNS lookup failed for host
$sender_host_address.
!verify = reverse_host_lookup
ciao
Markus
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/ Markus Reschke \
\ [email protected] /
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