If you see messages like this:
| Wiki Markup |
|---|
{{spamd\[3279\]: prefork: server reached \-\-max-clients setting, consider raising it}} |
You'll probably try raising the --max-clients setting, only to find that that switch does not exist. This was a typo; the correct settting is called --max-children.
See this mail from Matt Kettler for more details.
This bug was fixed in SA 3.1.1.