I have been running Mail Rate Limiting for the past year with no issues. Has worked fine. Two days ago, mail started building up in the queue. Appears to be mail from root, re-directs and contact forms.(local mail on 127.0.0.1)
The following messages were appearing in the logs:
milter-greylist: ratelimit overflow for class virtualmin_limit: 12526, limit is 1000 recipients / 3600 sec, key = "127.0.0.1"
The rate is set at 1000/hr.
The queue will not flush - I turned off the Mail Rate Limiting and the queue flushed.
I have turned the rating back on and will see if the error cleared.
milter-greylist: ratelimit overflow for class virtualmin_limit: 1766, limit is 100 recipients / 3600 sec, key = "127.0.0.1"