Re: Exchange 2003 Extremely Slow on Sending

Tech Tip: Click here to run a free scan for Windows Errors and optimize PC performance

From: c_ur_f8 (c_ur_f8_at_discussions.microsoft.com)
Date: 10/12/04


Date: Tue, 12 Oct 2004 13:59:01 -0700

It looks like you're right about the SPAM. I show 1000+ between midnight
last night at 5:05am this morning. Do you have any recommendations how to
lock down the system more?

"Bob Britton" wrote:

> Can you check the queues in Exchange System Manager?
>
> I just had a case where there was an exhorbitant amount of SPAM being pumped
> through my server.
>
> You could also adjust the smtp mail settings to see what they are for
> outbound mail (number of connections, etc.). If you have a lot of outbound
> mail, and it's not SPAM, you might open the number of connections.
>
> Also, if you are on ADSL or cable modem, UPLOAD speed is disproportionate to
> inbound/download speed.
>
> "Steve" <Steve@discussions.microsoft.com> wrote in message
> news:ED78981E-67FE-47C3-A610-DFFFFDD229DE@microsoft.com...
> > I am running a Windows SBS2003 server with Exchange and all of a sudden
> > outgoing mail is incredibly slow. Incoming mail is not affected. Any
> ideas?
> > This is on a Dell 2650 with Dual 2.4GHz Xeon processors and 4gb RAM.
> This
> > server is being used for Exchange, a license server for AutoCAD (not
> running
> > AutoCAD, just the licenses), and a print server. The file server is a
> > separate NAS device. I also have this server along with the others tied
> to a
> > gigabit switch that connects to the other switches in the office.
> > Thanks,
> > Steve
>
>
>



Relevant Pages

  • Re: How to do rDNS. WAS: RE: educating rDNS violators
    ... It's done in the DNS server. ... As a spam prevention measure, a lot of end-user Internet providers are ... Using your own mail server as a slave to the ISP's mail server will add ...
    (Security-Basics)
  • RE: OMA and Outgoing Spam
    ... Someone hacked a user account and use it to spam emails; ... Your Exchange server is open relaying emails;(You have checked it ... Your server is under RNDR Attack. ... Microsoft is providing this information as a convenience to you. ...
    (microsoft.public.windows.server.sbs)
  • RE: OMA and Outgoing Spam
    ... Someone hacked a user account and use it to spam emails; ... Your Exchange server is open relaying emails;(You have checked it ... Your server is under RNDR Attack. ... When you enable recipient filtering on the SMTP virtual server, ...
    (microsoft.public.windows.server.sbs)
  • Re: Anyone succesfully stopped Reverse NDR Attacks in exchange 2000?
    ... to their filtering servers and the Spam stops filling your Exchange Queues ... and destined to an non existing address on your server. ... connecting addresses as there are spam sent. ...
    (microsoft.public.exchange2000.admin)
  • Re: educating rDNS violators
    ... Our previous mail server setup included refusing all messages coming from ... Another way to catch a fair amount of spam is to require that the "From:" ... MX records to the filter then the filter would forward mail to our SMTP ...
    (Security-Basics)