Type: global configuration directive
Sets the ActionResumeInterval for all following actions. The interval provided is always in seconds. Thus, multiply by 60 if you need minutes and 3,600 if you need hours (not recommended).
When an action is suspended (e.g. destination can not be connected), the action is resumed for the configured interval. Thereafter, it is retried. If multiple retries fail, the interval is automatically extended. This is to prevent excessive resource use for retries. After each 10 retries, the interval is extended by itself. To be precise, the actual interval is (numRetries / 10 + 1) * $ActionResumeInterval. so after the 10th try, it by default is 60 and after the 100th try it is 330.
This documentation is part of the rsyslog project.