2 files changed, 11 insertions, 0 deletions

diff --git a/qmail-log.5 b/qmail-log.5
index 98cef63..52cd0e6 100644
--- a/qmail-log.5
+++ b/qmail-log.5
@@ -232,6 +232,11 @@ It will try again later.
 is unable to queue a bounce message,
 usually because the machine is almost out of memory.
 It will try again later.
+This can also be caused by incorrect settings of
+.B $QMAILQUEUE
+or errors in a program or script which
+.B $QMAILQUEUE
+points to.
 .TP
 .B unable to stat ...
 .B qmail-send
diff --git a/qmail-queue.8 b/qmail-queue.8
index 12eea0c..ded3285 100644
--- a/qmail-queue.8
+++ b/qmail-queue.8
@@ -40,6 +40,12 @@ and does not enforce any restrictions on its contents.
 However, the recipients probably expect to see a proper header,
 as described in
 .BR qmail-header(5) .
+
+Programs included with qmail which invoke
+.B qmail-queue
+will invoke the contents of
+.B $QMAILQUEUE
+instead, if that environment variable is set.
 .SH "FILESYSTEM RESTRICTIONS"
 .B qmail-queue
 imposes two constraints on the queue structure: