[TriLUG] Postfix Configuration Question

[Aaron S. Joyner]

Ken Mink wrote:

>Thanks to Jason and Aaron. Both of their ideas are spot on. The
>gateway machine is one of those machines that has just been humming
>along for quite a while. It's got RH7.3 and running an old postfix.
>It's time for an upgrade.  This has become enough of an issue to put
>the time in on it.
>
>Thanks,
>Ken
>  
>
A note about the different approaches that Jason and I suggested.  My 
mindset is geared towards high scalability, and his is towards lower 
maintenance.  In fact, significantly lower maintenance.  :)  It's 
unlikely that you'll need the scalability afforded by the local mappings 
vs verify, unless you're pushing more than a few messages per minute on 
average.  If you get up into the range of a few messages per second, 
start looking at other solutions.  Otherwise, verify is likely a simpler 
option.  Just be careful that you configure it correctly.  On the other 
hand, if you only have a dozen or so users in your domain and they 
change maybe once a year, personally I'd go w/ a simple map file.

There is of course the argument that if you only make user changes once 
in a blue moon, you'll forget how to make the changes and have to 
relearn it every time, but hopefully you remember to document, document, 
document, right?  :)

As another side note, relay_recipient_maps was added in Postfix 2.0, 
verify was added in Postfix 2.1.  A link to the verify documentation (as 
Jason didn't provide one :) is here: http://www.postfix.org/verify.8.html

Aaron S. Joyner