From: Michael Orlitzky on
On 07/12/2010 10:58 AM, Victor Duchovni wrote:
> On Mon, Jul 12, 2010 at 03:17:49PM +0200, David Touzeau wrote:
>
>> smtp-amavis unix - - n - 7 smtp
>> -o smtp_data_done_timeout=1200
>> -o smtp_send_xforward_command=yes
>> -o disable_dns_lookups=yes
>
> I notice people still using "disable_dns_lookups=yes" long after the
> reason for doing so became moot.
>
> This setting is no longer necessary for content filters, and is rarely,
> if ever, necessary otherwise. It should be removed from HOWTO guides, ...
>

If you don't mind, why was it necessary, and why isn't it any longer?
I've still got it on my amavisd-new instance, and have long forgotten
where it came from.