Sniff the traffic.

-Jeff Steward

On Wed, Oct 13, 2010 at 8:41 AM, Oliver Marshall <
oliver.marsh...@g2support.com> wrote:

>  Hi chaps,
>
>
>
> We have an oddity, or perhaps not such an oddity, with an Exchange 2003 box
> using up all the outgoing bandwidth. The issue appears to be outgoing
> emails. If we stop the SMTP service then the bandwidth immediately drops. If
> we turn it back on then within about a minute the bandwidth is used up and
> the router graphs so that the Exchange servers IP is uploading stuff.
>
>
>
> However, with the SMTP service started, the Exchange queues are nearly
> empty (currently 2 emails showing, both valid). The SMTP log itself doesn't
> show a massive number of connections to the smarthost (postini). Postini
> aren't reporting a large number of emails being sent to their server (at
> least no larger than normal). There aren't any current connections showing
> in the SMTP entry in Exchange Admin either. Relaying is limited to just
> Postinis IPs and, as no one uses the SMTP server to send emails as they all
> use OWA, no one is allowed to use the SMTP server at all.
>
>
>
> I can't see why, given that the queues are empty and the logs show nothing
> major, why the SMTP service should be causing such an upload usage...unless
> it's sending out loads of emails, then why aren't these showing up in any
> queues/logs ?
>
>
>
> Anyone knnow what we've missed or what might be going on?
>
>
>
> Olly
>
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