single spammer. Spammers regularly Burundi Email List change their email addresses to bypass filters. “Qualitative” filters can try to detect junk mail from unknown sources but legitimate mail can be inadvertently trashed in the process (“false Burundi Email List positives”) while some junk mail still gets through (“false negatives”). Filters are becoming a serious problem with many legitimate opt-in publishers being mistaken for spammers and Burundi Email List blacklisted. Once on a black list, the only way to be unblocked is to contact the ISP and ask to be placed on a white list. While some e-newsletter publishing tools let you monitor how many messages are opened or bounced, you might
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never know which readers are being Burundi Email List filtered unless you know which email program they’re using. Even then, the recipient might just be busy, uninterested, on leave or not receiving your message. Some filter programs don’t even Burundi Email List notify you that your message was blocked while others bounce back mail with “sensitive” content without specifying the rejected words. On another occasion my own free weekly e-newsletter was Burundi Email List blocked on its way to at least two subscribers thanks to Trend SMEX Content Filter detecting “sensitive content” yet the “naughtiest” word I could find was “teenage”. Pity the poor medical publishers who often use “controversial” words such as
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“breast” or “penis” in their newsletters. You might Burundi Email List be able to track down the reason you were blocked by examining the full header information (ask your subscribers to forward the entire copy of your junked message). The header should list Burundi Email List filter rules that the message violated, if the ISP uses software such as SpamAssassin. If not filtering, then what? Some online publishers advocate web services where you submit your newsletters for screening of content or technical problems that might trigger spam filters before Burundi Email List mailing. Of course, spammers could also abuse such a service to get their own mail past the filters. Others back the idea of
