Title: How can I block attachments?

Question: Subscribers' attachments as well as virus attachments
are being distributed to my Mailman list. Can I configure the 
list to ignore these messages?

Answer:

One way to block many attachments is to set a maximum message 
size. Text messages don't run large.  Even a 200-line message 
will only be about 15K.  Mailman's default setting is fairly 
generous at 40K, so this could be adjusted downward quite
a bit without cramping your subscribers' prose style.  One
bonus of setting a message size limit is that it will encourage
digest subscribers to prune their reply posts down the relevant
text instead of tacking a brief reply on to the end of a long
digest.  See under "General Options" to change the maximum size.

You can also explicitly tell Mailman to remove certain types
of attachments.  Log in to your list's admin pages at

	https://lists.prairienet.org/mailman/admin/listname

where "listname" is replaced with the actual name of your list. Once you
are logged in, go to the Content Filtering section.

Answer "Yes" to whether Mailman should filter mail.

You can specify attachments Mailman should remove in the most general
terms:
	image
	video
	application
or more specifically
	application/octet-stream
	image/gif
and so on.

Finally, you can decide how you want to handle messages that have
matched your content filtering rules - by rejecting them (a message 
is sent to the sender), discarding them, of sending them to the 
listowner for handling.

Update: 02/2004 by Mailman Admin
Date: 06/2003  Author: R. Skiver Thompson