For over a week now, I have been seeing DNS look-up failures - always
with mailspike, both whitelist and blacklist. It is affecting about
ten percent of my non-whitelisted connections.
Jul 21 15:10:28 geronimo postfix/dnsblog[27737]: warning: dnsblog_query:
lookup error for DNS query 163.123.219.112.bl.mailspike.net: Host or
domain name not found. Name service error for
name=163.123.219.112.bl.mailspike.net type=A: Host not found, try again.
Are other people experiencing similar difficulties, or is it my set-up?
Regards
Allen C
On 21/07/16 20:54, Dominik Chilla wrote:
>
>> You're thinking of smtpd_end_of_data_restrictions, but there still
>> your idea has a problem: smtpd is not examining the DATA, but merely
>> passing it along to cleanup(8). The cleanup service is where the
>> only native Postfix content checking (header and body checks, see the
>> header_checks(5) manual and BUILTIN_FILTER_README) is done.
> Yes, I ment something like xxx_end_of_data_restrictions. As I´m not
> sooo familiar with the code, an idea must not be understood as a
> proposal for a "nearly perfect" solution/implementation. Taking under
> attention that the cleanup daemon already has the capabilities to
> perform header_checks... I think it will be an interesting experience
> to write a patch ;)
>> Your idea would bloat smtpd, and while not running as a separate
>> process, it certainly would cause more overhead.
> That´s an argument!
>
