Posted 12 August 2010 - 09:10 AM
Hi I'm a newbie here and I have a question
I manage a small business network for a client of mine and they have been blacklisted by Spamhous.org a few times in the past 2 years for sending spam from their network most of the time I can figure out th offending computer and clean it and get us de-listed.
The IP they are blocking is the public IP of our Router, they all send emails through to a POP account from their hosted domain.
Wondering if there is an application that I can run or a utility that I can install on the network or run a their PC's that will tell me if they have a something that is using their PC's to send spam emails? or a network monitoring utility that can monitor the network for suspicious activity.
This is the 3rd time Spamhaus has shut us down in the past 2 years and it is getting annoying, the issue is that they are a temporary staffing agency and they send emails with the words job and career in them all the time. But that should not be enough to get them flagged as a spammer.
Any help would be appreciated