Email Blacklist

level9tech
level9tech used Ask the Experts™
on
I have an email server that I use to host email for several companies.  Somebody must have sent something out or someone has a virus that flagged our server to be listed on a blacklist.

How can we combat this?  How can we make sure that people using our server does not get it blacklisted?  I certainly cannot be going around checking every PC from every company for viruses that uses my mail server.

Is there any sure way to prevent others behavior from flagging my server?

I have good policies setup that require authentication and my server is not an open relay.

Does anyone know of any good sites that check a large amount of blacklists?
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Commented:
Sounds more like one of your customers sent out broadcast email.  SPAM.

This is quite common.

Ways to prevent it are to limit the amount of email they are allowed to send.  Get better customers!

Some blacklists will give you the offending email, to track down what customer is at fault.

Alan HardistyCo-Owner
Top Expert 2011
Commented:
Try http://www.mxtoolbox.com/blacklists.aspx for checks against many blacklists and also check http://www.mxtoolbox.com/blacklists.aspx to check your current reputation.

Author

Commented:
Thank you both.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial