2. Ask if the network of your potential host blackholed Ips.

2. Ask if the network of your potential host blackholed Ips.

Many hosts care little about who is actually hosting on their networks, as customers pay their bill. That means many hosters will allow porn sites, spammers and servers that create security issues on their network for the sake of the dollar. Even if you are to place ethical issues aside, this does have a negative impact on customers in general, however,

when a network blackholed for spamming, for example. Get blackholed means that other networks will refuse e-mail comes from IP addresses that are blacklisted. Some hosts have a number of entire class C (up to 256 IPs) networks blackholed and redistribute these tainted IPs to new clients. This means if your business relies on legitimate marketing closed-loop opt-in e-mail to drive sales, being on such a network can severely cut response to your campaign because your e-mail may never get to its destination.

Check with any hosts you are considering to see if their networks are blackholed. Also, here is a link to a third party source following blackholed networks and lists them: [http://www.spamhaus.org/sbl/isp.lasso]

The following URL is a good resource to help you understand what is marked as SPAM and what is not: [http://www.spamhaus.org/mailinglists.html]