Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17


Having issues with setting up relaying in Exchange

Posted on 2002-07-03
Medium Priority
Last Modified: 2010-03-05
Here is my environment.  I have a Windows 2000 Server(sp2) running Exchange 5.5 (sp4).  I have some POP users and some regular corporate users (exchange users).  The issue that I am having is that I keep on getting people taking advantage of my Exchange server to send out spam via the open relay.  I follow Microsoft's directions on how to shut that down, but my POP users can't send email after that.  They can receive, but cannot send.  I was wondering if you could help in this issue.

Thank you,

Scott Meadows
Question by:smeadows
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
  • 3
  • 3

Expert Comment

ID: 7127069
I'm assuming that by following Microsoft's recommendations, you mean that on your IMS connector's Routing tab you've checked "Reroute incoming SMTP mail" and that you've fed in your domain name(s) as inbound.

Have you also clicked the Routing Restrictions button and checked the "Hosts and clients that successfully authenticate"?

Do the POP users sign on to your network (have a username and password)?

Author Comment

ID: 7127203
Yes, I have selected "Reroute incoming SMTP mail" and also put in my domain names which I am hosting.  The POP users have W2K user accounts and passwords which they are using as their POP/SMTP user accounts and passwords.

Oh and yes, I have checked the "Hosts and clients that successfully authenticate"

What am I doing incorrectly?
LVL 11

Expert Comment

ID: 7127228
Are the POP clients configured to use a server that requires authentication to send?
Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  


Expert Comment

ID: 7127305
Are your POP clients, Outlook or Outlook Express?

Your POP clients should be set up for Outgoing server requires authentication. You can either specify a name & password or tell it to use the name & password from the incoming settings.

Author Comment

ID: 7127634
They are using both Outlook and Outlook Express.  Now I am a bit confused about setting them up for Outgoing server authentication, where do I do that?

Accepted Solution

Nevaar earned 400 total points
ID: 7127675
In Outlook Express, choose Tools -> Accounts.  Select the POP3 account and Click Properties. On the Servers tab, you should have a username and password filled in.  This should be the Windows username and password.

There should be a My server requires authentication checkbox. Make sure it's checked.  Click the Settings button and make sure the Same settings as my incoming mail server.

Test this for an Outlook Express user and post results here.

Author Comment

ID: 7144049
This did the trick

Featured Post

Office 365 Training for IT Pros

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

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

This article lists the top 5 free OST to PST Converter Tools. These tools save a lot of time for users when they want to convert OST to PST after their exchange server is no longer available or some other critical issue with exchange server or impor…
This article will help to fix the below errors for MS Exchange Server 2013 I. Certificate error "name on the security certificate is invalid or does not match the name of the site" II. Out of Office not working III. Make Internal URLs and Externa…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
This video demonstrates how to sync Microsoft Exchange Public Folders with smartphones using CodeTwo Exchange Sync and Exchange ActiveSync. To learn more about CodeTwo Exchange Sync and download the free trial, go to:…

721 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