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Default SMTP virtual flooding? - 2.May2005 1:35:00 PM

ymanana

Posts: 6
Joined: 18.Mar.2005
From: Lesotho
Status: offline

Hi,

I'd noticed that my server started generating increasing traffic: If I stop my default smtp virtual server, the traffic drop dead (or almost); if i restart it again it jumps off again to the my limit bandwidth.
I ran test to see if I were used as an open-relay and they cam out negative (tests according to "http://support.microsoft.com/?id=324958")

So, it really appears that there is aproblem or some1 or something is using my smtp.

Help, please...
YVes

Post #: 1

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RE: Default SMTP virtual flooding? - 2.May2005 2:02:00 PM

semorefred

Posts: 176
Joined: 9.Nov.2004
From: Charlotte
Status: offline

stop smtp service.
rename mailroot to mailroot.old
start smtp service.
it will auto create a new mailroot folder.

download stinger.exe and run it on the mailroot.old folder..

(in reply to ymanana)

Post #: 2

RE: Default SMTP virtual flooding? - 2.May2005 2:10:00 PM

ymanana

Posts: 6
Joined: 18.Mar.2005
From: Lesotho
Status: offline

Hi, thanx for the tip. Do i take it that you suspect that i have a worm or some viruses?

I'm yet to download stinger. Meanwhile i ran a full scan on the folder that i renamed, using NAV with the latest virus definition: and it didn't find anything.

I'll try the stinger, but failure of which, what other options?

Thanx...

(in reply to ymanana)

Post #: 3

RE: Default SMTP virtual flooding? - 2.May2005 2:56:00 PM

ymanana

Posts: 6
Joined: 18.Mar.2005
From: Lesotho
Status: offline

Hi I've run the stinger. Nothing wrongor detected.

(in reply to ymanana)

Post #: 4

RE: Default SMTP virtual flooding? - 6.May2005 8:24:00 PM

cwillis

Posts: 55
Joined: 4.Jun.2003
From: Chantilly, VA
Status: offline

Change your smtp settings so it only accepts mail for actual users.

The default is to accept mail for any user@domain.com and send back ndr's to those it can't find.

check out the recipent filtering of the following article

http://www.msexchange.org/tutorials/Sender-Recipient-Filtering.html

(in reply to ymanana)

Post #: 5