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Site from Constant Contact blocked (r20.rs6.net).

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  • Last reply by cor-el

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See attached screen grab of error message.

We use primarily Thunderbird and Firefox (latest versions). Everything works normally except a site from Constant Contact (that tracks when a customer/client opens or clicks on an email. We normally use uBlock and the problem occurs with and without that extension installed. I'm stumped. Thanks for any helpful you can provide.

See attached screen grab of error message. We use primarily Thunderbird and Firefox (latest versions). Everything works normally except a site from Constant Contact (that tracks when a customer/client opens or clicks on an email. We normally use uBlock and the problem occurs with and without that extension installed. I'm stumped. Thanks for any helpful you can provide.
Attached screenshots

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