March 25, 2008
7:13 a.m.
"Stephen J. Turnbull" <stephen@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@gnus.org * Lars Magne Ingebrigtsen