Max sieve list size MTA option

Sieve filter limit MTA options:  (0 &#x3c; integer &#x3c;= 16,384)
The  MTA  option specifies the maximum number of elements that may appear in a Sieve string-list structure (that is, strings listed within square brackets,  &#x2a;(string) ) inside a Sieve script.

The default is 64; allowed values are integers greater than 0 and less than or equal to 16384; (in MS 7.0.5 and earlier, the upper limit was 10000).

If a Sieve filter attempts to use more elements in a string list than this option allows, Sieve filtering will be aborted (the message being processed will be delivered normally though without Sieve filtering being applied), and the MTA will also generate a notification message to the Sieve owner -- the postmaster for system Sieve filters  (  and  channel filters), as well as for Sieve filters specified on groups or lists in the aliases file or via alias options,  or the user whose Sieve has the error for a user&#x27;s own Sieve filter. The notification message will be constructed using the  file,  and will include as reason/status text " ".

See also:
 * Sieve filter limit MTA options
 * systemfilter MTA Option
 * destinationfilter Option
 * Alias options