New threads are created for email replies to the message boards

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.1 EE SP4 (5.1.7)
• Fix Version/s: 5.1 EE SP5 (5.1.8)
• Component/s: Collaboration > Message Boards
• Labels: None
• Environment: All

When the mailing list option is enabled for the Message Board, email replies are suppose to be added to an existing thread. However, new threads are sometimes created for the email reply. This occurs because some application server / mail clients modifies / removes the email header.