[cobalt-users] [Raq#i] error message not understood

[Theodore Jones <theoj@xxxxxxxxxxxxx>]

Hello,

I am getting this error message a lot in my /var/log/messages file a
lot:

Oct 22 09:20:42 www in.qpopper[567]: @[<net address>]: -ERR Unknown
command: "capa".

It probably indicates that one of my users has a little program running
to check mail every 2 minutes or so, so it really fills up the log with
usless errors to me.  I don't know how to diagnos what this "capa"
command is, or how to get the logging program which creates this
/var/log/messages file to ignore this particular error....

Can anyone point me in the right direction?,

~ Theo