smtp-connections-out verifiedimportantWritten by the Hub
Outgoing connection limit
in the configuration this is a line
smtp-connections-out: 4000How many connections to receiving servers the engine may hold open at once, across all domains.
Values
- Values
positive integer- Default
4000 · taken from the build- applying
restart required- where it can be set
in the config file · with a startup flag · as an environment variable
In detail
The process-wide ceiling above every per-domain throttle: a limit of 100 connections to one domain means nothing if this is set to 10. Shipped at 4000, which is generous — the real constraint in practice is what receiving servers tolerate, and that is what the throttles are for.