Testing SMTP


So this is fairly basic but I realized I don’t have anything laying out the basic tools for testing SMTP posted.

Test with Telnet

  1. Determine the address of your SMTP server (unless you already know it or are testing local to the server)
    1. Open a command line (each line is a line return)
    2. type nslookup
      1. set type=mx
      2. domain.com
      3. Record the results
  2. Test with Telnet
    1. telnet <mail.domain.com> 25
      1. (this could be localhost or the output from the nslookup step)
      2. If you mistype past this point hit enter and try again don’t use backspace)
    2. ehlo mail.mydomain.com (you can replace ehlo with helo if your not using an exchange server)
    3. mail from: test@domain.com
    4. rcpt to: user@domain.com
    5. data
    6. Subject: This is a test
    7. Here you type your test message
    8. . (this is a period)
    9. quit

Web Based tools

Local Test tools

  • Pop3\SMTP mail client (outlook\express, thunderbird)
  • powershell
  • CMD\Telnet

Exchange 2007\2010 Powershell tools

  • Test-EdgeSynchronization (if using an edge subscription)
  • Test-Mailflow
  • Test-SmtpConnectivity

Supporting URLs

Manual uninstall of Exchange 2k7 Edge server


When trying to uninstall Edge role you receive this message
“cannot find information about the local server in active directory. this may be related to a change in the server name”.

Even after setting name back to the original still cannot uninstall
If possible the best solution is to use remove-edgesubscription from the hub server, and format and re-install the edge server role.

Or if this is not possible

Perform a manual uninstall of Exchange Edge role

WARNING: Always be sure to have a backup of a Domain controller system state and registry of the server before making any changes

  1. 1. Install and use “Windows Installer Cleanup Utility” to uninstall Exchange all 2007 entries on the edge server
    1. Use ADSIEdit.msc (may need to install from support tools) to remove the following entries
      1. Open ADSIedit.msc on the domain controlle
        1. Right click ADSI Edit and click connect to
        2. Select Configuration under well known naming contex
        3. Select Default (domain or computer that you logged in to
        4. Click o
      2. Browse to CN=Configuration, CN=Services, CN=Microsoft Exchange, CN=First Organization, CN=Administrative Groups, CN=Exchange Administrative Groups (FYDIBOHF23SPDLT), CN=Servers
        1. Delete CN=<edgeserver
    2. Open ADSIedit.msc on the Edge serve
      1. Right click ADSI Edit and click connect to
        1. Click Advanced and change port to: 50389
        2. Select Configuration under well known naming contex
        3. Select Default (domain or computer that you logged in to
        4. Click ok
      2. Browse to CN=Configuration, CN=Services
        1. Delete CN=”Microsoft Exchange” key
  2. Delete DNS entry for edge (not sure that was needed either)
  3. On the edge Server run Regedit
    1. Delete all the MSExchange keys under HKLM\System\currentcontrolset
    2. Delete HKLM\software\microsoft\Exchange
    3. Delete HKLM\SYSTEM\Currentcontrolset\services\ADAM_MSExchange
    4. Delete HKLM\SYSTEM\Currentcontrolset\services\ EdgeCredentialsvc
    5. Delete HKLM\software\microsoft\software\windows\currentVersion\uninstall\ADAM_MSExchange$0
    6. Delete HKLM\software\microsoft\software\windows\currentVersion\uninstall\Microsoft Exchang
  4. Delete c:\program files\Microsoft
  5. Renamed c:\ExchangeSetupLogs to c:\old_ExchangeSetupLogs
  6. reinstall Edge