I think we should distinguish blacklisting from being detected as spam. As some of the replies have mentioned, your server may well be blacklisted, but it may just be that individual messages are what are being detected as spam. There are many different algorithms used to detect spam, and between you sending it and a client receiving it, such detection may take place on the server of the recipient or on their client.
You mentioned two of particular concern: gmail and yahoo. Have you got examples of the emails indicating that? If so, in the mail headers you will find some headers that may give clues as to why it's being detected as spam. There are just so many potential things to affect it. A search will turn up all manner of observations, theories, hacks, and so on. You don't mention whether you're on CF 6, 7, or 8 (or something else). Here's good news, especially since you're on a shared server: as of CF8, if you use the SERVER attribute of CFMAIL, CF now (finally) uses that in creating the message-id header, which some servers use to otherwise flag mail from CF (and other servers) as spam. For more, see: http://www.carehart.org/blog/client/index.cfm/2007/12/7/cfmail_messageid_sol ution_for_CF8 And if you're on 6 or 7, I point out other solutions in a later entry pointed to from that one. If you're still on 6 or 7, some of the alternatives I offer will be quite challenging on a shared server. But this could be a great reason to upgrade to CF 8 if one is facing this problem. Hope that helps some. /charlie -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Stan M. Sent: Monday, April 06, 2009 12:09 PM To: Houston ColdFusion Users' Group Subject: [houcfug] Black Listing and Spam Filters I have a Coldfusion application that is an email system for about 1,000 addresses. There are probably an average of only 400 emails sent per week. Recently GMAIL, YAHOO MAIL started recognizing the messages sent from this system as spam. In GMAIL and YAHOO I have been able to tell the spam filters to let the mail go through. In other systems this approach may not be working. It is difficult and not practical to get to tell everyone to allow the specific email address. I have been searching on the web and apparently there are tools that black list email addresses or ip addresses. problem. I am not sure what tools there are to help me determine if the system is blacklisted. If so what I do next. I would appreciate any insights that you might have into this. 1. How can I check if I am blacklisted? 2. What can I do to stop being black listed? 3. Since I am on a shared server (hosted by dailyrazor.com) could I be blacklisted because of activity on that server that I am not responsible for? 4. Any other ideas how I could get around this problem? Thanks Stan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the "Houston ColdFusion Users' Group" discussion list. To unsubscribe, send email to [email protected] For more options, visit http://groups.google.com/group/houcfug?hl=en -~----------~----~----~----~------~----~------~--~---
