We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now


Users receiving the same message multiple times

mcutrell asked
Medium Priority
Last Modified: 2010-03-06
I installed a Sonicwall 400 e-mail appliance to scan for spam on my Exchange 2003 server.  Since installing this box my users are receiving some messages multiple times.  They receive some messages only one time but others appear up to ten times.  Is there anything in Exchange 2003 that would hold these messages and send them multiple times?
Watch Question

Expert of the Year 2007
Expert of the Year 2006

You need to look at the headers to see where the duplication is taking place.
I would be very surprised if this was Exchange causing the duplication - I would be looking at the appliance.



i will take a look at the headers when they come in.  I have looked at everything in the appliance and can not find anything there that looks like it could cause the problem.
Expert of the Year 2007
Expert of the Year 2006
There will not be a setting that is causing the problem. What is happening is that the message is not being transferred correctly. The sending server - whether this is the appliance or a remote server, doesn't think the message has been transferred and sends the message again. This is usually down to something interfering with the SMTP traffic flow... firewall, antivirus, antispam can all cause it.


Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.