OT - Recipient verification

[DAve]

Steve Freegard wrote:
> Hi DAve,
> 
> DAve wrote:
>> 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?
> 
> I don't know of any call-ahead solutions that offer the ability to look 
> up the users in a SQL DB.
> 
> Why don't you simply enable the +backup-mx option in milter-ahead.  When 
> the call-ahead destination service is down - this will use the cache to 
> answer (positive or negative) where possible but will accept messages 
> for any users it doesn't already know about.
> 
> Kind regards,
> Steve.

We recently acquired some new clients who came with a bonus, they 
brought along several large scale dictionary attacks. Those attacks have 
now spread to other domains on our mail servers.

Accepting any message for an unknown account is completely out of the 
question. I am planning on the private fiber between NOC-1 and NOC-2 
being down once a month for several hours, during business hours. Likely 
it will never go down, but planning on it now is better than finding a 
solution at 4pm election day, when it does go down under high traffic.

Looking at Postfiz, been awhile since I used it but that is the whole 
point of the VMWare test bed right?

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.