smtp-connections verifiedWritten by the Hub
Total connection ceiling
in the configuration this is a line
smtp-connections: 5000Upper limit on all SMTP connections the engine holds, incoming and outgoing together.
Values
- Values
positive integer- Default
5000 · 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 ceiling both other limits sit under: with 1000 allowed in and 4000 out, the shipped numbers add up exactly to it. Raising any of them without raising the file-descriptor limit of the process buys nothing — the installer sets ulimit -n 80000 for that reason.