Our provider suspended our account with 5000+ clients and their sites. The reason was that the whole IP range was blacklisted by SpamHouse, but our provider did not explain what emails, form what IP and with what content was sent exactly.
So now we are just suspended and 5000+ sites are not working, and all users moaning. Big problems, as you can see.
First thing I have is that we can (or we must?) buy separate professional SMTP server, fully configurable with GUI, and integrated with lots of spam detection software... so bad outgoing emails will be stopped, and will be able to detect who is doing bad things -> and then close their accounts at our hosting.
Is it good idea, or do you have any other idea to effectively and quickly find solution for this problem? It must be 100% effective, ad it's the only way to convince our provider to un-suspend our account.
Please help urgently as we are losing our business....
Thanks in advance, Anton
P.S. This question duplicated to: http://stackoverflow.com/questions/3921906/im-hosting-reseller-and-i-got-spam-problems-please-help-to-solve
UPD. After all your comments - we are now looking for an expert to hire to server administrator position in our company.