Name:	MailMaxFilters
Syntax	MailMaxFilters=Value
Applies to:	Servers
Add-on:
First Release:
Obsolete since:
Category:	Mail
Default:	100 (ND6/7, in R5 =50
UI equivalent:	None

You can set the parameter from 1 to 100. The default maximum, and maximum set using the INI parameter, affects both the number of rules per user as well as the number of system rules that can be executed on the server.

Note: Server performance issues may occur in cases where the maximum approaches or is at 100, depending on the total number of users and rules being executed. If it is suspected that the execution of rules is causing a performance issue, use the MailMaxFilters parameter on the server to limit the rules to a smaller value.

In some cases, you may observe that a rule that has been enabled will not run even though there are less than the maximum. For example, in R5, this may occur in cases where at least 50 rules have been created. This can occur because of the internal numbering structure that enabled rules use -- rules are not renumbered internally if another rule numerically lower is deleted. For example if an enabled rule is written to $FilterFormula_49 in the Calendar Profile (which makes it the 50th rule as the numbering starts with 0) the next rule created would be written to $FilterFormula_50 even if these were the only two rules enabled. In order to renumber the internal $FilterFomula_# entry, use the following workaround:

• Select all of the mail rules that are not enabled and click the "Enable Rule(s)" action.
• Select all of the rules and click the "Disable Rule(s)" action.
• Enable the rules that you want to be active.