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MailEnable: Message could not be delivered to some recipients.The following recipient(s) could not be reached: Recipient: [SMTP:[email protected]] Reason: 553 5.7.1 [BL21] Connections will not be accepted from 96.31.64.6, because the ip is in Spamhaus's list; see http://postmaster.yahoo.com/550-bl23.html
IP Address 96.31.64.6 is listed in the CBL. It shows signs of being infected with a spam sending trojan, malicious link or some other form of botnet.It was last detected at 2015-06-28 13:00 GMT (+/- 30 minutes), approximately 7 days, 17 hours, 30 minutes ago.This IP is infected with, or is NATting for a machine that is sending very large volumes of phish spam. "Phishes" are attempts to trick users into revealing their userids and passwords to other sites - often the user's bank or paypal, or some other site where they can steal money.Recently, most of these infections have been on multi-website hosting sites, where one or more users have had their userids and passwords stolen or cracked. In some cases, checking your mail server logs to find how who is sending large quantities of email will find the infecdtion. In other cases, the infected user's domain name may be used in the HELO - which in this case was "tampa1.airnavsystems.com".
