Start/notes.ini Parameters/SMTPRelayTransferFreq

SMTPRelayTransferFreq

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Parameter: SMTPRelayTransferFreq
Short description: Interval (in minutes) at which the router forwards outbound mail from mail.box to external SMTP servers.

Profile

Parameter
SMTPRelayTransferFreq
Category
Mail / Router
Component
Server
Available since
10.0
Supported versions
10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
Configuration document
Possible values
Minutes (default 1; typically 1–15)

Description

The Domino router collects outbound mail in mail.box and tries at regular intervals to hand it off to the external destination servers (or configured smarthosts). SMTPRelayTransferFreq defines this interval in minutes. A low value (1–3) provides near-instant delivery but, with very high mail volume or unreliable smarthosts, can lead to many short connections. A higher value (5–15) reduces connection load but delays delivery accordingly.

Example configuration

SMTPRelayTransferFreq=1

Notes & pitfalls

  • The default of 1 minute is sufficient for almost all setups.
  • Applies only to external SMTP relay; the internal router hop uses its own triggers.
  • Takes effect after restart task router.
  • Can be maintained in the Configuration document under “Router/SMTP → Restrictions and Controls” (preferred).