Solved

Windows 2003 IIS mail server fails to connect to isp servers

Posted on 2013-11-09
4
230 Views
Last Modified: 2013-11-19
I have a windows 2003 server running as a POP3 mail server using IIS. It had been working fine until 2 weeks ago. My setup is this. Desktop with Outlook, a server with several web sites and a server just running my mail. If i send email from my desktop I can only send to certain isp's. The email to ISP's that I can't send to are in the Queue folder on the mail server. So I know it's not my outlook on my desktop. At least I woldn't think it is. I can telnet and send email from the mail server with out a problem. Does anyone have any ideas?

Thanks
0
Comment
Question by:whiwex
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 15

Expert Comment

by:Skyler Kincaid
ID: 39636486
It sounds like a DNS issue to me. It is probably caused by DNS request for certain domains failing so it doesn't know where to send the mail. What are the DNS servers on your email server?

If you check the event logs do you see any errors? If you try pinging the websites for those companies do you get replies? (They may have ICMP disabled so it may or may not work anyway). When is the last time you restarted the email server or your DNS server?
0
 

Accepted Solution

by:
whiwex earned 0 total points
ID: 39636514
I can ping the sites that don't work. The mail server was also configured as a DNS server.
I removed the DNS from the mail server and I still have the same problem. The mail server has been restarted several times.
0
 
LVL 6

Expert Comment

by:iradatsiddiqui
ID: 39636682
Please check whether you have proper smtp connectivity

http://mxtoolbox.com/diagnostic.aspx

Do check whether your mail server is blacklisted?

http://mxtoolbox.com/blacklists.aspx
0
 

Author Closing Comment

by:whiwex
ID: 39658825
I found that I was blacked listed at SORBS even though it never showed up when I checked blacklists on the net.
0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Many of us need to configure DHCP server(s) in their environment. We can do that simply via DHCP console on server or using MMC snap-in on each computer with Administrative Tools installed in a network. But what if we have to configure many DHCP ser…
ADCs have gained traction within the last decade, largely due to increased demand for legacy load balancing appliances to handle more advanced application delivery requirements and improve application performance.
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question