doc/mailing-list-faq: user lists are subscribe only

Includes a few other minor changes and updates.
Signed-off-by: Lou Logan <lou@lrcd.com>

doc/mailing-list-faq.texi

@@ -47,7 +47,8 @@ We cannot provide help for scripts and/or third-party tools.
 @anchor{How do I ask a question or send a message to a mailing list?}
 @section How do I ask a question or send a message to a mailing list?
 
-All you have to do is send an email:
+First you must @ref{How do I subscribe?, subscribe}. Then all you have to do is
+send an email:
 
 @itemize
 @item
@@ -57,48 +58,17 @@ ffmpeg-user mailing list.
 @item
 Email @email{libav-user@@ffmpeg.org} to send a message to the
 libav-user mailing list.
-@end itemize
-
-If you are not subscribed to the mailing list then your question must be
-manually approved. Approval may take several days, but the wait is
-usually less. If you want the message to be sent with no delay then you
-must subscribe first. See @ref{How do I subscribe?}
-
-Please do not send a message, subscribe, and re-send the message: this
-results in duplicates, causes more work for the admins, and may lower
-your chance at getting an answer. However, you may do so if you first
-@ref{How do I delete my message in the moderation queue?, delete your original message from the moderation queue}.
-
-@chapter Subscribing / Unsubscribing
-
-@section What does subscribing do?
-
-Subscribing allows two things:
-
-@itemize
-@item
-Your messages will show up in the mailing list without waiting in the
-moderation queue and needing to be manually approved by a mailing list
-admin.
 
 @item
-You will receive all messages to the mailing list including replies to
-your messages. Non-subscribed users do not receive any messages.
+Email @email{ffmpeg-devel@@ffmpeg.org} to send a message to the
+ffmpeg-devel mailing list.
 @end itemize
 
-@section Do I need to subscribe?
-
-No. You can still send a message to the mailing list without
-subscribing. See @ref{How do I ask a question or send a message to a mailing list?}
-
-However, your message will need to be manually approved by a mailing
-list admin, and you will not receive any mailing list messages or
-replies.
+Note that the ffmpeg-devel mailing list does not require you to subscribe
+to send a message or patch, but ffmpeg-user and libav-user do require
+subscription.
 
-You can ask to be CCd in your message, but replying users will
-sometimes forget to do so.
-
-You may also view and reply to messages via the @ref{Where are the archives?, archives}.
+@chapter Subscribing / Unsubscribing
 
 @anchor{How do I subscribe?}
 @section How do I subscribe?
@@ -134,8 +104,6 @@ must be manually approved by a mailing list admin:
 These are:
 
 @itemize
-@item
-Messages from users who are @strong{not} subscribed.
 
 @item
 Messages that exceed the @ref{What is the message size limit?, message size limit}.
@@ -148,13 +116,12 @@ or is abusive towards others).
 
 @section How long does it take for my message in the moderation queue to be approved?
 
-The queue is usually checked once or twice a day, but on occasion
-several days may pass before someone checks the queue.
+The queue is usually checked daily to several times a week.
 
 @anchor{How do I delete my message in the moderation queue?}
 @section How do I delete my message in the moderation queue?
 
-You should have received an email with the subject @emph{Your message to ffmpeg-user awaits moderator approval}.
+You should have received an email with the subject @emph{Your message to <mailing list name> awaits moderator approval}.
 A link is in the message that will allow you to delete your message
 unless a mailing list admin already approved or rejected it.
 
@@ -175,6 +142,9 @@ Click the email link at the top of the message just under the subject
 title. The link will provide the proper headers to keep the message
 within the thread.
 
+Note that you must be subscribed to send a message to the ffmpeg-user or
+libav-user mailing lists.
+
 @section How do I search the archives?
 
 Perform a site search using your favorite search engine. Example:
@@ -203,9 +173,8 @@ Instead, use trimmed interleaved/inline replies (@url{https://lists.ffmpeg.org/p
 @anchor{What is the message size limit?}
 @section What is the message size limit?
 
-The message size limit is 500 kilobytes for the user lists and 1000
-kilobytes for ffmpeg-devel. Please provide links to larger files instead
-of attaching them.
+The message size limit is 1000 kilobytes. Please provide links to larger files
+instead of attaching them.
 
 @section Where can I upload sample files?