On Fri, 14 Mar 2008, Eric Shubert wrote:

> That hardware should be more than enough to handle things. I'd look toward
> networking issues for solutions. For example, have you installed a caching
> nameserver on the toaster? If not, that could make a significant difference.

Hmmm. The server is sitting on gig ethernet, and we've been running a 
caching DNS server on the box from day 1.

One issue we've uncovered over the weekend was that rbls weren't 
functioning properly, and after fixing that, a significant number of 
problems disappeared and loading dropped.

But some strange issues remain--a client who can POP, but can only send 
within their own Vdomain, and a weird 5.5.4 error:

554 mail server permanently rejected message (#5.3.0)

This is when sending to an existing account--is this possibly related to 
a domain key problem?

TIA,

--Duncan



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