Solved

SMTP Service Causing High Internet Usage

Posted on 2011-03-22
8
569 Views
Last Modified: 2012-05-11
Customer is complaining that the Internet is very slow.  After some troubleshooting, I have determined that SMTP is causing the issue.  The server is an SBS2003 running Exchange.  When pinging with the SMTP service started, the reply is 3000-4000ms.  When stoping the SMTP service, the ping reply drops down to a reasonable 20-40ms.  I checked the queue in System Manager but it is empty.  Any ideas?
0
Comment
Question by:ptsolutionsinc
  • 4
  • 3
8 Comments
 
LVL 1

Expert Comment

by:greenbug2002
ID: 35192155
is the SMTP Service actualy passing any traffic out the internet connection or is it slowing a proxy used for internet access by usisng CPU and memory if its the first option i would put a sniffer on the connection and see what is being sent second option try re-service packing exchange
0
 

Author Comment

by:ptsolutionsinc
ID: 35192215
we dont have a proxy and and CPU usage is normal.  how do i put a sniffer on the connection?
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 35192469
It may be receiving a large message/s and you won't see that in the queue.

What are the message size limits? Hopefully 5Mb max 20Mb...

You can turn on SMTP protocol logging to see what is happening, but I would recommend setting message size limits if you have none.
0
 

Author Comment

by:ptsolutionsinc
ID: 35193465
I have checked the message size limits and they were set to unlimited.  i changed to 20MB but the issue continues.  I followed Microsoft's Knowledgebase to enable SMTP protocol logging and MSExchangeTransport is already set to Maximum but the knowledgebase does not show how to access the logging.  where do I go to check this?
0
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

 
LVL 31

Expert Comment

by:MegaNuk3
ID: 35194891
Should be under c:\windows\logfiles

Did you restart SMTP after setting the size limits?
0
 

Accepted Solution

by:
ptsolutionsinc earned 0 total points
ID: 35195132
Yes, I did restart the SMTP service.  The c:\windows\logfiles folder does not exist.  I did however research other Experts-Exchange posts and found a post that helped me resolve the problem.  Not sure if there is a way to link this post to that post but the post is below.  The accepted solution is what helped me out.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_26873983.html


alanhardisty:

If you block TCP Port 25 outbound on your firewall - the message flow should stop and then you can see the messages in the queue and delete the offending ones.  Then open port 25 back up again and problem solved.

When a message is being sent - the queue will appear empty - this is nothing unusual.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 35196406
Thanks for the final solution, feel free to close the question.
0
 

Author Closing Comment

by:ptsolutionsinc
ID: 35275392
I researched other Experts-Exchange posts and found a post that helped me resolve the problem.  Not sure if there is a way to link this post to that post but the post is below.  The accepted solution is what helped me out.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_26873983.html
0

Featured Post

[Webinar] Disaster Recovery and Cloud Management

Learn from Unigma and CloudBerry industry veterans which providers are best for certain use cases and how to lower cloud costs, how to grow your Managed Services practice in IaaS clouds, and how to utilize public cloud for Disaster Recovery

Question has a verified solution.

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

Suggested Solutions

Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
Find out what you should include to make the best professional email signature for your organization.
In this video we show how to create a User Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Mailb…
In this video we show how to create a mailbox database in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Servers >> Data…

920 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

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now