Spam Filters - Let Everyone Know You Are A Good Internet Person

A lot of ISPs block emails before the filter scans the subject line for spam trigger words

. The reason for this is that they ca not be sure you are who you say you are. Deliverability is significantly higher for legitimate senders, with a reputation that can be verified. You can let ISPs know you are a trusted sender in several ways:

1. Have a static IP address. Every Domain Name System (DNS) has a corresponding IP address, which is the numerical identifier assigned to computers for that domain. It is best to consistently use the same IP address for your email server(s) so that the ISP knows you are an established sender and can build a reputation profile about your IPs/domains. Dynamic IP addresses change every time the computer connects to the network or Internet. ISPs are leery of messages sent from dynamic IP addresses because many spammers constantly change their sending IP addresses to avoid detection. Email filters will consequently look upon dynamic IPs as indicative of fly-by-night spam operations.

2. Make sure that both forward and reverse DNS are set up for your domain. Spammers and spoofers forge domain names or IP addresses to hide the actual address. To detect these, spam filters do a reverse DNS lookup. A forward lookup checks to see which IP addresses are associated with a domain name. A reverse lookup checks to see which domains are associated with an IP address.

3. Set up a sender-permitted framework (SPF) or sender ID framework (SIDF) record for your domain, and consider other authentication. SPF and SIDF are authentication initiatives launched by Microsoft and utilized by major ISPs such as AOL, Earthlink, and others. They were developed to make it easy to distinguish reputable organizations and businesses from DNS forgers. SPF and SIDF allow recipients to see which IP addresses have been approved to send mail from your domain. If email comes in from a rogue IP address, it can be automatically blocked. Some ISPs, most notably Yahoo, are experimenting with a new form of authentication called Domain Keys Identified Mail (DKIM). With DKIM, each email contains a small digital signature, embedded in the headers, which helps guarantee the legitimacy of the sending domain. To combat "phishing"-related identity theft, PayPal is one of the earliest adopters of DKIM and is already digitally signing most of their outbound email.

4. Get your business certified by an online reputation management services firm. When it comes to email deliverability, reputation matters. Enlist a credible service to vouch for your name, integrity, and best practices. Working with an online reputation management (ORM) services firm can help you see where deliverability problems may arise and minimize the likelihood of being filtered out by ISPs. Third-party whitelists are widely used by ISPs and receivers of all sizes.

5. Get on the whitelists of all the major ISPs. Major ISPs such as Yahoo and AOL have reputation-based programs that invite legitimate businesses to put themselves on the ISP's internal whitelist. This ensures that your emails are delivered to recipients as long as you follow their rules. Having a good reputation increases the probability of a successful e-marketing program.

by: Smile2012

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