It would appear that my company has ended up on a blacklist. The following is being returned via an e-mail auto-responder:

Response: 553 5.3.0 Your IP is blacklisted at http://relays.osirusoft.com and your message has been rejected.
Now I have tried to reach this site and I keep getting "The page cannot be displayed".

Does anyone here have any knowledge of relays.osirusoft.com? If we have been blacklisted, I suspect it is because of all the virus e-mails flying around the net these days. Has anyone ever been blacklisted? How hard is it to get removed from these lists?

Thanks

Cheers: