OT - Recipient verification

[DAve]

Just asking here because of the knowledge bank we have. Feel free to 
respond off list, though I suspect that are a lot of us running multiple 
copies of MS.

Currently we use milter-ahead on our MailScanner gateways and we use 
milter-ahead to verify the recipient. We will be splitting our mail 
network geographically to take advantage of NOC-2 about 50 miles away. 
Half our MailScanner gateways and outbound servers will go to NOC-2. We 
can't move our toasters yet because the Maildirs are NFS mounted.

If NOC-1 goes down I still want the MailScanner gateway in NOC-2 to 
accept mail. My problem is that milter-ahead needs to verify recipient 
addresses with the toaster in NOC-1. Every milter/MTA solution I have 
found verifies the recipient address by connecting to the destination 
MTA, our toaster, which may be unreachable.

What I need is to verify the recipient address with a local store on the 
MailScanner gateway. I would like to use a SQL db as I can easily slave 
it off the toasters SQL store. Anyone have any ideas how to go about this?

Thanks,

DAve

-- 
Three years now I've asked Google why they don't have a
logo change for Memorial Day. Why do they choose to do logos
for other non-international holidays, but nothing for
Veterans?

Maybe they forgot who made that choice possible.