Hi,
I have some issues with my exchange server 2000
1. Spam issue
Whenever I checked the "Allow all computers which successfully authenicate
to relay, regardless the list above", spammer would able to hack in the
exchange server and send out ten thoursands of spam using my exchange
server.
I am not sure why that is happening because the options I checked require
computers to be authenicated before the relay.
The reason I check this box is because I have a few branch offices relay on
my exchange server to send emails. And some locations won't have a static
IP, so I can't really specify a certain range of IP addresses to relay.
I finally bought a firewall and setup vpn connections from those remote
offices and mobile laptops clients in order to relay the exchange server.
Out of curiousity, how did the spammer authenicate to my exchange server in
the first place?
2. Email issue.
When a staff send email to the distribution list from the global address
book. One of the individual is having problem getting the email. The error
message is below and some of the information like name, IP and domain info
are modified. When I tried to send email to this individual instead of
using the distribution list and he has no problem getting my emails. I
wonder why. I hope someone is able to help me. Thanks
From: System Administrator
Sent: Friday, October 31, 2003 12:29 PM
To: Peter Alexander
Subject: Undeliverable: Board Meeting Announcement
Your message did not reach some or all of the intended recipients.
Subject: Board Meeting Announcement
Sent: 10/31/2003 12:29 PM
The following recipient(s) could not be reached:
Peter Alexander on 10/31/2003 12:29 PM
There was a SMTP communication problem with the recipient's email server.
Please contact your system administrator.
<exchange.abc.com #5.5.0 smtp;571 from 200.100.52.100 We do not relay>