If anyone can point me to relevant sources to help me understand and address the following problem, I'd be very appreciative!
______ It appears that all messages that I've sent to Yahoo addressees, incl. Rocketmail, at least since early September, have gone into the recipients' spam-buckets. In the few copies of messages I've received from relevant correspondents, there is nothing in the Subject: to indicate Spam. In the only set of headers I've been able to acquire, I can see nothing that represents a criterion to cause the email-client to fling it into the spam-bucket. The SMTP-server I use has *not* been registered on any spam-servers at any relevant time. I've trialled sending via a couple of different SMTP-servers, and that makes no difference to the behaviour. I've rebooted the codec, and hence acquired an alternative IP-address (in a quite different range), but the behaviour remained the same. The aspect I've investigated as a probable cause is as follows: Every message carries the originating IP-address as well as that of the first SMTP-erver. My IAP, TransACT/iinet, appears to register with Spamhaus the dynamic IP-addresses that it provides its customers. (I assume that the reason is to protect their own spam-reputation, but they've responded slowly, seldom and uninformatively throughout; so I don't know that). An ISP, by registering with Spamhaus the IP-addresses it rents to its customers makes it impossible to run one's own SMTP server on a home-LAN. (I trialled that at one stage a few years back, although, for me, it turned out to be more trouble than it was worth). I've never heard of receiving ISPs testing originating IP-address against Spam databases. OTOH, some of the messages I've sent from IP-addresses other than that allocated by iinet have got straight through to the receipient's mailbox at Yahoo and not to their Spam box. As I understand it, the purpose of spam-registers is so that ISPs receiving email can check the IP-address **of the SMTP-server** from which a message is despatched. If some threshold volume of messages from that address is detected as spam, the SMTP-server is registered as a rogue. The ISPs that subscribe to that spam-service thereafter interpret all messages from that SMTP-server as spam, and mark it as such. That may result in a warning being inserted into the Subject-line, markers being inserted into headers which cause the message to go into recipients' spam-buckets, or (worst of all, when it's a false positive), simply dropped, I've been unable to get any action from iinet. I've also found no way to get any reaction from Yahoo or Spamhaus. Any leads or suggested lines of investigation much appreciated! _______________________ Roger Clarke mailto:[email protected] T: +61 2 6288 6916 http://www.xamax.com.au http://www.rogerclarke.com Xamax Consultancy Pty Ltd 78 Sidaway St, Chapman ACT 2611 AUSTRALIA Visiting Professor in the Faculty of Law University of N.S.W. Visiting Professor in Computer Science Australian National University _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
