Blacklist checker

[Debowne]

I hope this is the correct forum...

I had one computer infected with a worm last week which has now been cleaned and patched up. As a result of the worm our IP address was added to a couple of blacklists. I have located one of the lists and had our IP removed. We are still unable to send email to one of our clients which leads me to believe we are still listed on a blacklist somewhere but I don't know where. Could it just be on their exchange server? Does anyone know of a better way to search blacklists to determine if we are listed on one?

Thanks for the help, I've never had to deal with this so any help or suggestions on what to do is greatly appreciated.
-Matt

 

[Xemus]

There are a bunch of sites that will test an IP against the major blacklists, here is one:

http://www.mxtoolbox.com

http://www.closedsocket.com