[TriLUG] [Possibly OT] Changing ISPs

[Christopher J. Knowles]

Once again, I appear, hat in hand, prostrate at the altar of the amassed 
knowledge of TriLUG...

My company is being forced to move ISP's.  (Level3 is dropping anything so 
rinky dink as our 300 people...)  It's already been decided by the muckety 
mucks who we're going with... 

My problem is this... 

The change over will happen sometime in the next few months... and I would 
like to make sure that inbound e-mail and web traffic doesn't get lost.  (or 
at least that the loss is a minimum...)

Now, we run our own DNS servers, and I'm perfectly capable of maintaining 
normal events, but this is a little bit beyond me.  

So my question is this... what's the right sequence of events to make 
everything go smoothly?

CJK