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| Subject |
My email to TZO was rejected with a NJABL error message |
| Author |
Scott Prive |
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Because millions of non-business PC's are infected with spyware/mail-bots, most email providers now block email receipt from dynamic IP addresses. Many ISPs are unwilling to shut off an infected customer's Internet account, making the problem unresolvable.
ISPs such as AOL and Earthlink have long ago used blocks on the Internet-facing side of their mailservers (not internally of course).
With regret, TZO must also block receipt of email from dynamic IP address based servers. As a company providing powerful services to dynamic IP addresses, the decision to also block dynamic IPs on our mailservers was not an easy one. However to not take this decision would endanger the email service for everyone using it. The rejection may look like this:
<h; mail.example.com #5.0.0 X-Spam-Firewall; host mail.tzo.com[209.67.242.150] said: 550-DNSBL listed at dynablock.njabl.org 550-Misconfigured mail server at the destination site - see 550 http://njabl.org/dynablock/ (in reply to RCPT TO command)>h;
If you operate a mailserver on a dynamic IP address, you have 3 options:
1) Use the 'Support web form' to log your Support question (or use another email address)
2) configure your mailserver to route your email through a trusted "Smarthost" on a static IP address. One example would be your Internet provider's mailserver (provided they support this), the TZO Outbound Mail Relay (OMR) service, or another such service.
3) If you HAVE a static IP address-based server and you see this message, it means that your ISP has misconfigured your IP address as within a "known dynamic IP address range". Even if your IP address never changes, this can be true.
NOTE: TZO.COM can not persuade any blacklist to remove any listed IP address.
The URL provided in the rejection contains instructions for you (or your ISP, in some cases ) to review.
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