Re: Postfix slowing down in high-volume environment

Casper Angelo wrote:
> Hey,
>
> I have a bit of a problem, that I don't quite know how to locate.
>
> I'm running a high volume mailservice, servicing ~400.000 users, moving

We handle 350 000 users currently.

> in the area of 4mill mails/day over 7 postfix mailservers. The servers

Our load is spread across 8 Postfix machines.

> are not equally equipped, so they don't handle the an equal amount of
> mail, but each server handles as much as it can. The servers act as
> frontend and spam/virus scanners for a series of webmail servers. The
> process is as follows:
>
> 1: smtp reception
> 2: spam/rbl check (spamassasin + amavis)
> 3: virus check (clamav + amavis)

Are all the services listed above running all on the same
machine? (7 machines doing postfix+amavis+clam?)

> 4: maildrop lookup (openLDAP - on an other server)
> 5: mail forward to destination webmail server
>
> [...]
>
> If anyone out there has any great ideas I could investigate, I would
> appreciate it! Because I'm running out of ideas...

No one here can smell your postfix configuration. If you want help:
postconf -n is a GOOD place to start.

Cami