Maximum Received Headers

MailSite will rejected messages that contain more than 20 'Received' headers within a message.

This is to prevent email loops from occurring where one host or mailbox redirects to another host/mailbox which in turns redirects back to the original destination. In some cases it may be required to increase this value. To do this you need to edit the Windows Registry:

WARNING!!
Incorrectly editing the registry can damage the server, please proceed with care.

1. Click on the start button
2. Select the run option
3. Type regedit, the registry editor will open
4. Select the HKEY_LOCAL_MACHINE key
5. Select the SOFTWARE key
6. Select Rockliffe key
7. Right click on the Mailsite key
8. Add a new DWORD Value
9. Right click on the new DWORD value entry and select rename
10. Rename the value to "MaxReceivedHeaders"
11. Right click on the MaxReceivedHeaders entry
12. Select modify
13. Enter the maximum number of Received headers you want MailSite to accept (default = 20)
14. Click OK
15. Close the registry editor
16. Restart the SMTPRA and SMTPDA services

For customers running the SQL Connector, you need to add the following data to the MailServerProperties table

• ServiceName = Server
• PropertyName = MaxReceivedHeaders
• ServerRoleId = 0
• PropType = 4
• PropIntValue = x

Where x = the new value