comparison tests, the subaddress parameter, the &*copy*&, &*envelope*&,
&*fileinto*&, &*notify*&, and &*vacation*& extensions, but not the &*reject*&
extension.
-.new
Exim did not support message delivery notifications (MDNs) when Sieve handling
was introduced, so &*reject*& (which need them) could not be supported.
-.wen
In order for Sieve to work properly in Exim, the system administrator needs to
make some adjustments to the Exim configuration. These are described in the
.section "Semantics of keep" "SEC11"
-The &(keep)& command is equivalent to
+.new
+The &(keep)& command is by default equivalent to
.code
fileinto "inbox";
.endd
+but, when called from a redirect router, the destination can be set
+by using the &%sieve_inbox%& option on the router.
+.wen
It saves the message and resets the implicit keep flag. It does not set the
implicit keep flag; there is no command to set it once it has been reset.