docs: Enhance logrotate description (#2469)

docs/content/config/environment.md

@@ -317,11 +317,11 @@ Defines who sends reports (if they are enabled).
 
 ##### LOGROTATE_INTERVAL
 
-Changes the interval in which a report is being sent.
+Changes the interval in which log files are rotated.
 
-- **weekly** => Rotate weekly.
-- daily => Rotate daily.
-- monthly => Rotate monthly.
+- **weekly** => Rotate log files weekly
+- daily => Rotate log files daily
+- monthly => Rotate log files monthly
 
 !!! note
 

mailserver.env

@@ -233,17 +233,19 @@ REPORT_RECIPIENT=
 # => Specify the sender address
 REPORT_SENDER=
 
-# Changes the interval in which a report is being sent.
-# **weekly** => Send a report every week
-# daily => Send a daily report
-# monthly => Send a report every month
+# Changes the interval in which log files are rotated
+# **weekly** => Rotate log files weekly
+# daily => Rotate log files daily
+# monthly => Rotate log files monthly
 #
 # Note: This Variable actually controls logrotate inside the container
-# and rotates the log depending on this setting. The main log output is
+# and rotates the log files depending on this setting. The main log output is
 # still available in its entirety via `docker logs mail` (Or your
 # respective container name). If you want to control logrotation for
 # the Docker-generated logfile see:
 # https://docs.docker.com/config/containers/logging/configure/
+#
+# Note: This variable can also determine the interval for Postfix's log summary reports, see [`PFLOGSUMM_TRIGGER`](#pflogsumm_trigger).
 LOGROTATE_INTERVAL=weekly
 
 # Choose TCP/IP protocols for postfix to use