Start/notes.ini Parameters/Log_MailRouting

Log_MailRouting

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Parameter: Log_MailRouting
Short description: Mail routing verbosity: controls how detailed router events are written to log.nsf / console.

Profile

Parameter
Log_MailRouting
Category
Mail / Router
Component
Server
Available since
R5
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5
GUI equivalent
Configuration document (Router/SMTP → Logging)
Possible values
10 = errors only (default), 20 = + summaries, 30 = + details, 40 = full / debug

Description

Log_MailRouting regulates the level of detail of the router log messages. At level 10, only errors are logged; 20 adds summary statistics per run; 30 writes every single delivery with recipient and server hop; 40 is the full debug level including internal state transitions.
For production servers, 20 is a good compromise; during acute issues, raise it briefly to 30 or 40.

Example configuration

Log_MailRouting=20

Notes & pitfalls

  • Level 40 produces a lot of output – enable only temporarily.
  • The Configuration document setting overrides this notes.ini.
  • Pairs with Log_Connections, Log_Tasks, and Console_Log_Enabled.
  • Adjust the log.nsf retention (via Log=...) accordingly.
  • The change takes effect after tell router quit / load router.