Finding all catchall forwarders

I'm trying to find all domains for which a "catchall" email forwarder has been set, so we can encourage the relevant users not to use one!

Catchalls in /etc/valiases seem to have the form:

domain.com:*: somename@your-isp.com

so I've tried using grep to output the lines from the files which contain "colon asetrisk colon space" (ie ':*: ') using:

grep -i ':*: ' *

but this also gives me a load of lines that do *not* contain the magic search string!

Where is my grep syntax wrong please?

 

Found the answer to my own question; this command

grep ‘*:’ /etc/valiases/* | egrep -v ‘:fail:’

lists all domains which do not have the catchall set to :fail:

From http://blog.eukhost.com/webhosting/tweaking-cpanel-for-lower-memory-consumption/