Over the past couple of weeks, I've been getting a higher frequency of responses from recipients that they are getting my emails but are unable to open the pdf document through the link in the email. These are paying subscribers and are getting quite annoyed with the blockages. I don't really blame them. The following is a typical response. Hello, hope all is well. I wanted to let you know that our technology department has identified Constant Contact, the webpage used to host your newsletters, as unsafe due to known distribution of malicious documents. This is not your fault, apparently hackers have found a way to take advantage of the site/host. As such, we have now blocked employees from accessing your newsletters. This is a new problem for this recipient company but I've had a number of these crop up in the past 2-3 weeks from other subscribers. This is different than the regular blacklist problems that crop up from time to time. Is there any solution if they're not willing to relax their security?
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