Start/notes.ini Parameters/MailMaxThreads

MailMaxThreads

Parameter: MailMaxThreads
Short description: Sets the maximum number of threads the mail router on a Domino server can create to perform mail transfers.

Profile

Parameter
MailMaxThreads
Category
Mail / Router
Available since
At least 9.0.1 (HCL documentation)
GUI equivalent
According to HCL, no direct GUI option. Configurable in the configuration document on the NOTES.INI Settings tab.
Possible values
Integer — number of mail router threads

Description

According to HCL product documentation, MailMaxThreads sets the maximum number of threads the mail router can create to perform mail transfers.
Verbatim from the HCL docs: Increasing this number creates more threads to handle mail transfers. However, additional threads may increase the demand for server processing time.
The default value is One thread per server port — one thread per configured server port.

Example configuration

MailMaxThreads=10

Notes & pitfalls

  • According to HCL docs, the parameter applies exclusively to servers.
  • HCL generally points out that more threads bring throughput but increase CPU load.
  • The HCL help text Setting transfer limits (conf_settingtransferlimits_t.html) recommends manually setting the maximum to a value between 1 and 25, depending on server load.
  • On the HCL documentation page for MailMaxThreads, the syntax field erroneously notes MailTimeout=number of threads (still present as of HCL Domino 14.5.1). However, the correct parameter described by the page is unambiguously MailMaxThreads (see page title and description).

Sources (HCL Product Documentation)