Expert Knowledgebase
Spam and security with Richard Luckett
Checking logs for OWA logon attempts
(08 NOV 2005)
Is there a location in Exchange System Manager to check security logs for Outlook Web Access? I have a user that would like to know if someone logged onto his account via Outlook Web Access.
Forcing Outlook to use local vs. domain credentials
(08 NOV 2005)
We use Outlook 2003 SP1 on Windows XP SP2. My users log in using cached credentials and then connect to a remote site via VPN.
When connecting over these slow links (dial-up connections) and launching Outloo...
How enabling SSL for OWA affects bandwidth
(08 NOV 2005)
We are in the process of allowing certain users to access their e-mail via Outlook Web Access from the Internet. I've read a lot of Microsoft's technical data, and just about anything that pertains to Outlook W...
Password prompt when attempting to view a replicated public folder
(08 NOV 2005)
I have a user who is prompted for a password when attempting to view a replicated public folder, even though the permissions appear to be OK. Do you have any suggestions?
Time lag opening and sending encrypted e-mails
(08 NOV 2005)
I have recently switched to Windows XP Professional. I notice that it seems to take about 30 seconds to open or send encrypted e-mails via Outlook vs. one to two seconds to open or send non-encrypted e-mails. W...
Public folder error: 'Unknown error while processing certificate'
(08 NOV 2005)
I am unable to access the properties of the default public folders. An error message, 'unknown error while processing the certificate,' appears.
Open port security issues
(08 NOV 2005)
I ran an Internet security check on the Symantec Web site and found that my computer was exposed because the ICMP Ping port and 80 HTTP port are open. Do I need to close them? If so, how?
Relay prevention on the Exchange server
(08 NOV 2005)
How can I prevent Exchange 2003 from relaying? Or is relaying prevented by default?
Problem receiving internal e-mail
(08 NOV 2005)
I am doing some work for a relative who owns a small company. They are using Windows 2000 Small Business Server (SBS) on one server platform and host six clients locally. The clients are going through the (prox...
Changing mail to plain text
(08 NOV 2005)
Is there a place in Exchange 2000 to change everyone's e-mail to plain text, instead of changing each user in Outlook?
Exchange authentication options
(08 NOV 2005)
It seems clear to me that if you do not allow your Windows client to validate its machine account to Active Directory, but still log in with your valid domain user account, Exchange will work for a short period...
Using certificates with Outlook Web Access
(08 NOV 2005)
I have a small company with two sites; each one has an Exchange 2000 server. Is it possible to get Outlook Web Access working for both servers using a single SSL certificate without a "front-end server," which ...
How a hotfix works
(08 JUL 2005)
How does a hotfix work?
Spam filling up BADMAIL folder
(08 JUL 2005)
I have an Exchange 2000 client that appears to be a target of a large spammer. The Exchange server is receiving about 10,000 email messages hourly, which is filling up the BADMAIL folder weekly and causing the ...
Do I have a Remote Administration Trojan (RAT) on my system?
(08 JUL 2005)
I have something called AdvancedRemoteInfo listed as a program file on my Exchange server. I'm afraid it is a RAT (Remote Administration Trojan) and I think I should delete it in Add/Remove programs. What do yo...
Loophole for relaying spammers
(08 JUL 2005)
We have an Exchange 2000 server running and our Internet Service Provider informed us that our server has been spamming lately.
We have:
Disabled open relaying
Checked that there are no open ports
Insta...
Blocking certain extensions in Exchange 2000
(08 JUL 2005)
How do I block certain extensions in Exchange 2000?
Informing an infected sender
(08 JUL 2005)
By looking into the e-mail header, I can tell the IP address of the infected computer that sends me a virus. What is the best way that I can inform the sender of the infection? A ping will provide me the name o...
Antivirus and antispam applications for Exchange 2003
(08 JUL 2005)
What has your experience been like with antivirus and antispam applications for Exchange 2003? Can you recommend a good product?
Antivirus interfering with a program installation
(08 JUL 2005)
When setup.exe (on a program I have) is executed with my AVG7 running, it detects a virus. I'll immediately heal it, but doing so also destroys the installation. I gave this program to a friend to test on his c...
Intelligent Message Filter installation issue
(08 JUL 2005)
I am using Exchange 2003. I installed the Exchange Intelligent Message Filter (IMF) but the counter for it never showed up, even after a few days and restarting Exchange services. I thought I would reinstall, b...
Missing e-mail account after restore
(08 JUL 2005)
I had to restore my computer and reinstall Norton Antivirus and firewall. I was able to set up three of our four email accounts, but now I can't get the "real" email for my account. Roadrunner was unable to hel...
Problems sending mail from Exchange 2000 to yahoo.com
(08 JUL 2005)
I have an internal and external email address. I'm on Exchange 2000. When I send an email to the external address, a non-delivery report (NDR) error message is returned. I created an SMTP connector, but continu...
Content filter product recommendations
(08 JUL 2005)
I was able to reduce spam by about 70% but still have that other 30% that I would like to whittle down. My thought is to add a content filter on the server, but I haven't found one yet. I was thinking I could f...
Trouble with inbound e-mails
(08 JUL 2005)
I'm having a problem with inbound e-mails from a couple of e-mail domains. The e-mails are making it through our outside spam filtering service just fine with no red flags. But when they hit our Exchange 5.5 se...
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