Advertisement

01.24.2007 at 12:20PM PST, ID: 22135431
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!
5.6

Help! E-Mail server apparently hijacked!

Asked by SusanPK in Windows Network Security

A client who is hosting their own mail server (Windows 2003, Exchange 2003) has gotten themselves onto some spammer blacklists. We confirmed that relaying was disabled and scanned the server and all workstations for malware of every stripe. We found everything to be clean. We requested to come off the blacklists and were promptly removed. Today, 24 hours later, they’re back on the black lists.

I did an experiment that I suspect I should have done to begin with. I shut down all Exchange services and also disabled the SMTP service. Then I watched the router’s log. Shortly port 25 connections to all over popped up at an alarming rate. The source IP address is the server’s. And there is even something that looks like an outgoing PPTP connection.  Here is a log excerpt.

2007-01-24-14:51:53      IP      allowed from 192.168.112.2 port 62725 to 195.245.231.67 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:53      IP      allowed from 192.168.111.20 port 2628 to 207.138.234.64 port 80 TCP(allow by Outgoing)
2007-01-24-14:51:52      IP      allowed from 192.168.112.2 to 72.144.87.90 protocol 47 (allow by PPTP)
2007-01-24-14:51:51      IP      allowed from 192.168.112.2 port 62720 to 202.84.15.188 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:51      IP      allowed from 192.168.112.2 port 62724 to 64.60.0.26 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:50      IP      allowed from 192.168.112.2 port 62723 to 64.12.138.152 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:49      IP      allowed from 192.168.112.2 port 62722 to 203.186.94.37 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:48      IP      allowed from 192.168.112.2 port 62721 to 216.76.30.106 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:48      IP      allowed from 192.168.112.2 port 62720 to 202.84.15.188 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:48      IP      discard from 192.168.112.2 port 62719 to 195.245.230.163 port 25 TCP SYN (default)
2007-01-24-14:51:47      IP      allowed from 192.168.112.2 port 62719 to 195.245.230.163 port 25 TCP(allow by Outgoing)
2007-01-24-14:51:46      IP      allowed from 192.168.111.20 port 2627 to 70.42.134.17 port 80 TCP(allow by Outgoing)
2007-01-24-14:51:46      IP      allowed from 192.168.111.20 port 2626 to 193.149.47.241 port 80 TCP(allow by Outgoing)

What IS going on here? How do I find the problem and, of course, get rid of it?

Start Free Trial
 
Keywords: Help! E-Mail server apparently hijack…
Title
1 Blacklists
2 Domain Blacklist
3 I just started a new job and I was give…
4 URGENT:  Malware / Virus Help nee…
5 Blacklisting
6 spammers
 
Loading Advertisement...
 
[+][-]01.24.2007 at 12:30PM PST, ID: 18389721

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.24.2007 at 12:34PM PST, ID: 18389762

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.24.2007 at 02:07PM PST, ID: 18390717

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.24.2007 at 03:05PM PST, ID: 18391362

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.24.2007 at 04:38PM PST, ID: 18392039

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.24.2007 at 06:40PM PST, ID: 18392648

View this solution now by starting your 14-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zone: Windows Network Security
Sign Up Now!
Solution Provided By: giltjr
Participating Experts: 4
Solution Grade: B
 
 
[+][-]01.24.2007 at 09:34PM PST, ID: 18393342

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 05:24AM PST, ID: 18395049

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 05:40AM PST, ID: 18395139

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 06:01AM PST, ID: 18395265

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 07:31AM PST, ID: 18396117

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 09:58AM PST, ID: 18397682

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 11:06AM PST, ID: 18398342

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 02:24PM PST, ID: 18399959

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 02:46PM PST, ID: 18400181

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 14-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]01.25.2007 at 03:34PM PST, ID: 18400569

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 14-day free trial to view this Expert Comment or ask the Experts your question.

 
 
Loading Advertisement...
20081112-EE-VQP-43