Trying to keep up with what I've learned by posting it here:
Then the <expletive deleted> network consultant tells me that he was
trying to pretty up the network and as soon as I was done with the "back
up" machines and went back to the "primary machines" he did a bunch of
changes so before the next switch I have the change the numerous IP
addresses assigned to those lpars. And he's going out of town that
Let me kill him boss, let me kill him.
meanwhile yahoo (and some other domains) are still rejecting email from
our new addresses...
and I'm exhausted.
When he tried to suggest changing those ip addresses I told him not in the
<expletive deleted> foreseeable future.