On Thu, Jun 10, 2010 at 09:50:16AM -0400, Wietse Venema wrote:
> If the postmaster address is excluded from spam checks then you
> may want to change the address_verify_sender setting.
>
> The current default is:
> address_verify_sender = $double_bounce_sender
>
> The older (problematic) default is
> address_verify_sender = postmaster
>
> The final ultimate fix is to make address_verify_sender time-dependent,
> so that it does not become a spam sink itself.
Making it time-dependent address_verify_sender may somewhat compound
issues with grey-listing at the origin domain. It is useful to have a
value that is stable enough to not repeatedly be subjected to greylisting.
--
Viktor.
