[I'm not sure if I'm simply ignored by others or if certain peoples MTA is
simply blocking legit email traffic. So I'll try to resend my previous message
trough webmail...]
Seems like this OT thread becomes OT another time :-)
The initial question was not whats the best way to measure line usage but if
incomming spam can create so much traffic that it comes to a noticeable
reduction.
In my opinion spam alone shouldn't create such a big reduction, because one
single mail with a larger attachment is creating the same or also much more
traffic.
To understand if this connection is "overloaded" good old ping and traceroute
should be enough. To find an answer what's causing most traffic Glenn can
temporaly disable/block certain traffic by stopping the smtp-service or closing
http, ftp or all other ports on the firewall.
Another way is to connect a separate computer near to the router (using a hub
and not a switch) install a packet sniffing software and watch whats going on
the internal port of the router. Maybe one nice guy from the 70/80 users has
installed P2P software or has running a backdoor infected computer (worm's can
come in also trough kazaa, irc and similar client applications)
Markus
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