[Mailman-Developers] before next release: disable backscatter in default installation

[Lars Magne Ingebrigtsen]

"Stephen J. Turnbull" <stephen at xemacs.org> writes:

> Unfortunately this attitude does seem to be catching hold.  I was told
> recently that a secondary MX would have to stop functioning as such
> because his ISP insists that he have an up to the second list of all
> valid mailboxes at my site; he's not allowed to relay undeliverable
> mail to me *ever*.

These days, secondary MXs usually do SMTP callouts to verify whether
email addresses are valid on the primary mail server.  It does, however,
make the concept of a "secondary MX" less useful than it used to be. 

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi at gnus.org * Lars Magne Ingebrigtsen