I have several clients who put out daily newsletters to their clients using a Cold Fusion Loop to generate customized messages to each client. Typically, these mailing lists are from 3,000 to 5,000 customers each time a newsletter is sent. Lately, we have been experiencing very high return rates, sometimes as much a 25% of the messages being returned. The problem is particularly aggravating because the returned messages do not identify the E-mail address of the addressee, or any explanation of why the message bounced. To date I have been totally unsuccessful in determining the cause of the lack of explanation in the bounced messages. If the customer's E-mail address is no longer valid, we can easily delete the address from the mailing list. But since there is no way of knowing who it went to, we are not able to purge the list of bad addresses. Since Cold Fusion and iMS (FusionMail) are also being used to automatically generate E-mail messages to customers informing them of their orders, even more important messages are not getting through. There is insufficient information in the bounced messages to tell what type of message is being returned. I have relocated most of my servers to our headquarters. I have not yet transferred my iMS mail server, so I have been attempting to get some of my other Cold Fusion generated E-mail messages submitted via my ISP's QMail server. Some messages go out but others do not. In troubleshooting the problem I found the following link in one of the Cold Fusion E-mail logs. http://cr.yp.to/docs/smtplf.html I then checked the Cold Fusion Support forum and found the following thread: http://forums.allaire.com/devconf/Thread.cfm?&&Message_ID=629135&_#Message629135 What these two sources are telling me is that the CFMail tag may sometimes be generating bare line feeds. These bare line feeds are keeping the QMail server from sending messages that CF is generating. Furthermore, since I am also using the CFMail tag in the template that generates the messages that FusionMail is generating for the subscription lists, I think that some of the mail servers are bouncing the messages and because they could not handle the bare linefeed they are not returning their normal error messages. Can anyone confirm this analysis? Adding the work around to Qmail is not very satisfying, since that means that the bare linefeed will still be in the message which will cause the message to be rejected by some receiving mail servers. Does anyone have experience using third party CFX mail tags with iMS. Do any of them avoid the problem of bare line feeds? Is there a way that FusionMail can be customized to strip out any bare linefeeds? Bob Webmaster, Ocala Internet Business Park Ocala, Florida ======================================================================== This list server is Powered by iMS 'The Swiss Army Knife of Mail Servers' -------------------------------------- To leave this list please complete the form at http://www.coolfusion.com/iMSSupport.cfm Need an iMS Developer license? Sign up for a free license here: http://www.coolfusion.com/iMSDevelopers.cfm List archives: http://www.mail-archive.com/infusion-email%40eoscape.com/ ========================================================================
