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Showing posts from November, 2012

Public Folder Migration - 451 4.4.0 Primary target IP address responded with: "530 5.7.0 Must issue a STARTTLS command first"

Issue -

Migrating Public Folder from Windows Small Business Server 2003 to Windows Small Business Server 2008 fails - Error 451 4.4.0 Primary target IP address responded with: "530 5.7.0 Must issue a STARTTLS command first"

Cause -

TLS authentication is enabled with a certificate on SMTP Virtual Server on the Source Server (SBS 2003)

Steps to Resolve the Issue -

- Open Queue viewer on SBS 2008 Server , you may see all the email related to Public Folders are stuck.
- Open Exchange System Manager on the source server (SBS 2003)
- Open the Properties of Default SMTP Virtual Server
- Click Delivery Tab
- Click on Outbound Security and uncheck TLS encryption and click OK
- After that Click on Access Tab, Under Secure Communication click on Communication and clear   Require Secure Channel and click OK
- Click on Certificate, Click Next button, slect Remove the current certificate and finish the wizard
- Apply the changes and restart SMTP Service from Services Console
- This should f…