[Mailman-Users] large list = very slow network

[Patrick Bogen]

On 4/7/06, John Meier <john.meier at gmail.com> wrote:
> I've been reading up on performance tweaking in the mailman FAQ and was
> wondering where I should concentrate my efforts to avoid the listserver
> saturating my line.  I'm thinking a local dns cache on the box would be
> good, but have seen anything that directly addresses how to "slow" the
> system down
>  to avoid cramming the network.
This would probably be a good place to start. As I understand, DNS
lookups are one of the more expensive aspects of an MTA's operation.

You should also review your VERP settings; if you look around, I
believe you can find a pretty good analysis of what different values
get you. I'm a bit tired right now, or else I'd make an effort at
pretending like I remember this stuff. ;)

That said, you may want to ask around postfix places and see if you
can get any help from that direction. Mailman doesn't have much
network impact, and you can't really tweak it beyond adjusting VERP.

Make sure that personalization is turned off...

--
- Patrick Bogen